Final Revision 1st Prep First Term Science Past Paper PDF

The Genius In Science Final Revision st 1 Prep First term Prepared by Dr. Dina Abdul Tawab 01128970995 1 Write the scientific term for the following: 1. Anything that has mass, volume and occupies space (Matter) 2. The building and structure unit of...

The Genius In Science Final Revision st 1 Prep First term Prepared by Dr. Dina Abdul Tawab 01128970995 1 Write the scientific term for the following: 1. Anything that has mass, volume and occupies space (Matter) 2. The building and structure unit of any matter (Atom) -Tiny particles can’t be subdivided (Atom) 3. The building unit of the sphinx statute (Atom) 4.Small particles that revolve around the nucleus at very high speed in certain energy level(electrons) 5. Subatomic particles have negative charge and its mass equals 1\1836 u (electrons) 6. Subatomic particles have Positive charge and its mass equals 1 u (protons) 7. Subatomic particles have neutral charge and its mass equals 1 u (neutrons) 8. Chemical Compounds that are used to improve the agricultural production.(Fertilizers) 9. The number of the positive protons that found inside the nucleus (atomic number) 10. The number that written at the lower left side of the element symbol and symbolized by the symbol (Z) (atomic number) 11. The sum of number of the protons and neutrons that found inside the nucleus (Mass number) 12. The number that written at upper left side of the element symbol and symbolized by the symbol (A) (Mass number) 13. They are different forms of the same element's atoms that have the same atomic number but differ in mass number (Isotopes) 14. Regions where electrons revolve around the nucleus according to their energy(energy levels) -Paths in which electrons revolve around nucleus (energy levels) 15. The first true periodic table (Mendeleev's periodic table) 16. A table which elements arranged in ascending order according to atomic mass (Mendeleev's periodic table) 17. A table which elements arranged in ascending order according to atomic number (Moseley's periodic table) 18. The number of unpaired electrons in Lewis's structure of an element (Valence electrons) -The electrons found in the last energy level of the element atom (Valence electrons) 19. The horizontal rows in modern periodic table (Periods) 20. The vertical columns in the modern periodic table (Groups) 21. The dot representation of valence electrons around the symbol of an element.(Lewis's structure) 22. Elements whose electron configuration end with 5,6,7 electrons (Non-metals) 23. Elements whose electron configuration end with 1,2,3 electrons (Metals) 24. Element in (p- block) that can't be identified solely by number of electrons in their outermost energy level (Semi-metals or metalloids) 2 25.Substances composed of two of or more materials that aren't combined and their components can be separated by physical methods. (Mixture) 26. Mixture in which components can't be distinguished by naked eye. (Homogeneous mixture or solution) 27. Mixture in which components can be distinguished by the naked eye (Heterogeneous mixture) 28. Methods used to separate the components of solution of solid substance which is dissolved in water (Evaporation and condensation) 29. Method used to separate solid substance which isn't dissolved in water by using filter Paper in filtration funnel (Filtration) 30. Substances whose components can't be separated by the physical method.(Pure substance) 31. The simplest pure form of matter and can't be dissociated in to simpler forms (Element) 32. A molecule which contains one type of identical atoms (Molecule of elements) 33. Device used to separate hydrogen and oxygen by electrolysis of water (Hoffmann voltameter) 34.The positive pole of Hoffmann’s voltammeter (Anode) 35.The negative Pole of Hoffmann’s voltammeter (Cathode) 36. The gas that evolve in anode during electrolysis of water in Hoffmann voltammeter(Oxygen gas) 37. The gas that evolve in Cathode during electrolysis of water in Hoffmann voltammeter (Hydrogen gas) 38. Properties of substance that can be observed and measured in some cases.(Physical properties) 39. Physical property of liquids that describe their resistance to flow and the movement of objects through them. (Viscosity) 40.Physical property used to distinguish between materials that float or sink on the surface of water (Density) 41.Temperature at which the state of substance starts to change from solid to liquid.(Melting point) 42. Temperature at which the state of substance starts to change from liquid to gas(Boiling point) 43. Transparent, low density material where 99.8% of its composition is of air only(Aerogel) 44.Lightest solid material has excellent insulating Properties and used to make jackets for researchers in Antarctica (Aerogel) 45. Properties of substance that only appears when chemical reaction occurs, leading to change in the shape and composition of substance (Chemical properties) 46.Non-metal gas is used to fill car tires instead of air (Nitrogen gas) 3 47. Alloy is made of iron with added elements and used to make cooking utensils (Stainless steel alloy) 48. An inert gas is used to fill balloons. (Helium gas) 49.. Metalloid conducts electricity poorer than metals but better than non-metals and it is used in manufacture of computer chips.(Silicon) 50. Alloy is used in construction of military aircrafts frames(Aluminum-Titanium alloy) 51.The measuring unit of atomic radius (Picometer) 52. A table which elements arranged in ascending order according to atomic number and the way of filling energy sublevels with electrons (Modern periodic table) 53.Type of fertilizers contains nitrogen, phosphorus and potassium (NPK) 54.One of the characteristics of living organisms in which they obtains food, that represents the main Source of energy, and produces substances that are used in building their body. (Nutrition) 55. Organisms that can make their own food through photosynthesis process that occurs in chloroplasts (Autotrophic organisms of producers) 56.Organisms that depending directly or indirectly on other producers to obtain their food (Heterotrophic organisms or consumers) 57. Inorganic substance produced in photosynthesis process (Oxygen gas) 58.Organic substance produced by plant as food (Glucose) 59.The substance responsible for absorbing light energy in plants (chlorophyll) 60.A process by which living organisms obtain oxygen gas directly from its surrounding environment and release carbon dioxide gas (Respiration) 61.Vital process involves breaking down organic nutrients to release the energy required to carry out all biological activities (cellular respiration). 62.Blood vessels that carry the blood rich digested food and oxygen gas from heart to all the body cells (Arteries) 63. Blood vessels that carry blood containing waste products and carbon dioxide gas to heart (veins) 64. tissue transports water and mineral salts from the cuts to the rest of plant (xylem). 65. tissue transport food produced by photosynthesis process from leaves to the rest of plant (Phloem). 66. A process by which living organisms get rid of harmful waste products resulting from vital processes (Excretion) 67.Machine is used for patients who suffer from kidney failure to performs function Kidneys through purify the blood from toxins (dialysis machine) 68. Specialized cells that control the opening and closing of stomata in plant leaves (Guard cells) 69. The process that enables living organisms to move from one place to another (Movement) 70.System that responsible for the movement of the human body (Musculoskeletal system) 71. Flowers opening during the day and closing at night (Gazania flowers) 4 72-Plant leaves that drooping and folding upon touch (Mimosa plant) 73.Flowers follow the movement of the sun at it rises and sets (sunflowers) 74.Microscopic living organisms most of them can't be seen by naked eye and they found everywhere around us (Microbes) 75.Type of beneficial bacteria live on the roots of leguminous plants that provide the plants with nitrogen(Root nodule bacteria) 76.Type of bacteria decompose roots of leguminous plant into nitrogen compounds that are soluble in water, which increase the soil fertility.( decomposition bacteria) 77.the first anti biotic to be extracted From Fungus (penicillium) 78.Scientist who won the Noble prize in Medicine. (Alexander Fleming) 79.The scientist who discovered the first antibiotic (Alexander Fleming) 80.Type of fungus secrete substance that stop the growth and reproduction of certain type of bacteria (penicillium Notatum). 81. System consist of one star and 8 planets that revolve around the sun in elliptical paths at different distances (Solar system) 82.Planet has very thin crust filled with craters caused by meteor impacts and its atmosphere composed of hydrogen and helium (Mercury) 83.Planet has thick crust and its atmosphere very dense composed mainly of carbon dioxide gas (Venus). 84. The four closet planets to the sun (Inner planets). 85. Planet has thicker crust than Venus and its atmosphere composed mainly of nitrogen and oxygen gases (Earth) 86. planet has thick crust and it is called red planet and its atmosphere compared mainly of carbon dioxide gas. (Mars) 87. The four furthest planets from the sun outer planets( 88.Imaginary straight line extending from North pole to South Pole passing through Earth's center (Earth's Axis) 89. The sun's appearance in the sky throughout the day or the year as if its position is shifting from east to west, while the Earth rotated around its own axis (The apparent motion of sun) 90. Metal atom that has lost one or more electrons (Positive ion or Cation) 91.Nonmetal atom that has gained one or more electrons (Negative ion or Anion) 92. Elements that are stable as result of their outermost energy levels are completely filled with electrons (Noble or Inert gases) 93. Elements whose atoms tend to lose their valence electrons to reach the Stable electron configuration. of nearest inert gas (Metals) 94. Elements whose atoms tend to gain their one electron of more to reach the stable electron Configuration of nearest inert gas (Nonmetals) 95. Electrostatic attraction between positive ion and negative ion (Ionic bonding) 96. The chemical bond that arises between cation and anion. (Ionic bonding) 97. Compounds are formed due to electrostatic attraction between Positive ion and negative ion (Ionic compounds) 98. Compounds have high melting and boiling points (Ionic compounds) 5 100. Compounds are their aqueous solutions and their maltenes can conduct electricity. (Ionic compounds) 101. Chemical bonding occurs between two atoms of the same nonmetal's element or between two atoms of different nonmetal by sharing electrons. (Covalent bonding) 102. The bond which is formed due to sharing pair of electrons of each atoms (Single covalent bond) 103. The bond which is formed due to sharing two pairs of electrons of each atom. (Double covalent bond) 104. The bond which is formed due to sharing three Pairs of electrons of each atom. (Triple covalent bond) 105. Compounds have low melting and boiling points and don't dissolve in water. (Covalent compounds) 106. Compounds mostly don't conduct electricity (Covalent compounds) 107. The simplest organic compound (Methane) 108. Atom of element contains four single electrons and has the ability to bond with each other in organic compounds (Carbon) 109. The process of changing two uncharged objects by rubbing two objects together (Charging by friction or rubbing) 110. The Electrical charges that accumulate on the surfaces of objects when they lose or gain electrons (Static electricity of electrostatic charges) 111. Device is used to measure weak electric charges (coulomb meter) 112. The measuring unit of weak electric charges (coulombs). 113. Scientist who formulated inverse-square law (Charles Coulomb) 114. The arrangement of materials according to the easiness of losing electrons when rubbed together (electrostatic series) 115. The charge of higher material on the electrostatic series (Positive charge) 116. The charge of lower material on the series (Negative charge) 117. Type of electric force arises between objects have the same type of electric charges (Repulsive electric force) 118. Type of electric force arises between objects have different electric charges (attractive electric Force). 119. Region of space surrounding an electric charge in which its effect appears (Electric field) 120. Imaginary lines that show the path taken by small free-moving positive charge placed in the electric field (Electric field lines) 121. The process of charging an uncharged. object by its contact with charged object (Charging by Contact) 122. Device is used to detect if an object is electrically charged and determine the type of charge on charged object (electroscope or electric detector) 123. A system used to protect structure and buildings from lighting strikes (Lightning rod). 124. Natural rocks that has the ability to attract magnet cut certain metallic objects (Natural magnet or lodestone) 6 125. Materials that attracts to magnets (Magnetic materials) 126. Materials that aren't attracted to magnets (non-magnetic materials) 127. The areas in mange the attraction force (magnetic force) of magnet is strongest (Two poles of magnet) 128. the area in magnet which the attraction force of magnet decreases (The middle area of magnet) 129. The geographical pole of the Earth which refers to magnetic south pole of the Earth as the Earth act a giant magnet (The geographical North pole of Earth) 130. The geographical pole of the Earth which refers to magnetic north pole of the Earth as the Earth act a giant magnet (The geographical south pole of Earth) 131. Like magnetic poles repel each other, Un like magnetic poles attract each other (Law of attraction and repulsion) 132. The region of space around a magnet where the effect of its magnetic force appears in it (The magnetic field) 133. Imaginary Lines represent the force of magnetic field (Magnetic field Line) 134. The mutual magnetic force between a magnet and a magnetic material with its field. (The attractive force) 135. Forces that act on objects over a certain distance without touching (Field forces) 136. Forces that act on objects when they touch each other (Contact forces) 137. The scientist who discovered that all material objects in the universe attract each other (Isaac Newton) 138. The Force that pulls all object downward towards the center of the Earth (Earth's gravitational force) 139. Lines that represent Earth's gravitational Force (Earth's gravitational field Lines) 140. The space in which the Earth's gravitations force affects material objects, with an attraction force towards the center of the Earth (Earth's gravitational field). 141. It is Natural phenomenon that occurs due to the gravitational attraction force between the moon and Earth, causing periodic changes in elevation and recession of water in the seas and oceans (Tidel phenomenon). 142. Regions in space formed due to the collapse of massive star at the end of its life (Black holes). 143. The rotation of any object in space around another central body in curved path due to the gravitational attraction force between them. (The orbital motion). 144. The amount of matter that the object contains (The mass). 145. The gravitational force that earth exerts on the object (The weight). 146. Tool is used to measure the weight (Newton meter or spring balance). 147. The measuring unit of weight (Newton). 148. The basic unit of structure and function in any living organism (Cell). 149. The arrangement of living organisms. into groups based on their similarities and differences to facilitate their study and. Identification (Classification). 150. Undifferentiated cells that have the ability to be transformed and differentiated into all the differentiated cells of the body that perform specialized functions. (Stem cells). 7 151. Device used to observe unicellular organisms (light microscope). 152. Organisms their bodies consist of single cell and they are unspecialized (Unicellular or microscopic organisms). 153. Organisms their bodies consist of many cells and their cells are differentiated and specialized (Multicellular organisms). 154. Undifferentiated cells with the ability to continuously renew themselves in human (Stem cells). 155. Living organisms can't be seen by naked eye (Microorganisms). 156.Microorganisms whose genetic material is not surrounded by nuclear membrane (prokaryotes) 157.Living organisms with more complex bodies and whose genetic material is surrounded by nuclear membrane (Eukaryotes). 158.Ancient solar Cluck that was wed to determine the time based on the length and direction of the shadow resulting from apparent motion of the sun (Sundial) 159. A Solstice that occurs on December 22nd, due to the leaning of the northern end of Earth's axis away from the sun at angle of 23.5° (winter solstice) 160.An equinox that occurs on Septembers, when northern end of Earth's axis neither leans Close to nor away from the sun (Autumnal equinox) 161. A season when the apparent height of the sun. is the lowest (winter) 162. A Season when the apparent height of the sun is the highest (summer). 163.A solstice that occurs on June due to the leaning of the Earth's axis leans closet to the sun at angle 23.5° (Summer Solstice) 164. An equinox that occurs on March 21, when the nor then end of Earth's axis neither leans close to nor away from the sun (Vernal (Spring) equinox) 165. Different stages that the moon goes through during its orbit around the Earth as result of the changing of its position relative to bath the sun and the Earth (Phases of the moon). 166.Natural Phenomenon that occurs when the Earth, during its orbit around the sun. aligns itself between the sun and the meant and it blocks sunlight partially of completely from reaching the moon (Lunar eclipse). 167. Type of eclipse occurs when the entire moon is located within the shadow of the earth and appearance of moon as dark disc due to absence of sunlight (total lunar eclipse) 168.Type of eclipse occurs when part of the moon's body is located within shadow of earth, while the other part is in the Penumbra of earth and the moon appears partially dark (Partial lunar eclipse) 169. The dark area that doesn't receive light as result of presence of opaque object in Path of light rays (Shadow) 170.The partially illuminated area that receives some of light rays, which surrounds the shadow created by presence of opaque object in path of light rays (penumbra) 8 Complete the following statements: 1.Prokaryaters obtain their food in various ways such as autotrophs or heterotrophs. 2.The inorganic substance used in photosynthesis process are water, mineral salts and carbon dioxide. 3.Light energy is converted into stored chemical energy in photosynthesis process. 4.During artificial photosynthesis process, the leaves supplied with hydrogen gas and absorb carbon dioxide gas. 5.Unicellular organisms obtain oxygen gas directly from surrounding environment and release carbon dioxide gas. 6. Mammals obtain oxygen gas from atmospheric air through lungs. 7. Amphibians obtain oxygen from atmospheric air through lungs and skin. 8.Fish Obtain dissolved oxygen in water through gills, while insects obtain oxygen gas through tracheal tubes. 9.During photosynthesis process plants absorbs carbon dioxide gas and produce oxygen gas 10. During respiration of plants, they obtain oxygen from atmospheric air and release carbon dioxide gas. 11. Plants obtain oxygen required for respiration from air through Stomata 12.Respiration process occurs in the living cells called cellular respiration. 13.Chloroplasts in green plants carry out photosynthesis process and produce glucose and sugar. 14.Circulatory system consists of three main parts which are heart, blood vessels and blond 15.Blood vessels include arteries, veins and blood capillaries. 16.Excess water and salts get rid of the body through sweat glands in form of sweat. 17. The kidneys help the body to get rid of excess water, salts and urea in form of urine. 18.Amoeba moves by false feet (pseudopodia), while paramecium moves by cilia. 19.Microbes are classified into prokaryotes and eukaryotes. 20. Green plants need carbon, hydrogen and oxygen elements to form carbohydrates in the process of photosynthesis. 21. Nitrogen element to form proteins which are used in the growth of cells and tissue of the plant. 22.Lactic acid bacteria convert lactose into lactic acid which gives yogurt its distinctive sour taste and thickness. 23 -Some diseases caused by food contamination such as Dysentery and Typhoid. 24. The treatment of Dysentery is antiprotozoal drugs, while treatment of Typhoid is antibiotics. 25. Disease causing agent at Dysentery is Entamoeba Histolytica ,while Typhoid is salmonella typhi. 26.The closet planet to the sun is Mercury white the furthest planet is Neptune. 27. The largest planet from diameters is Jupiter while the smallest diameter planet is Mercury. 28. The order of Earth planet ascendingly according to size, is fourth, while descending is fifth. 9 29. Jupiter and Saturn composed of gases only and their atmosphere composed of hydrogen and helium gases. 30. Uranus and Neptune composed of gases and ice and their atmosphere composed of hydrogen helium and methane gas. 31.The angle between Earth's axis and imaginary perpendicular line is 23.5° 32. The shadow is the shortest at noun, while it is the longest at sunset. 33.The Earth rotates around its axis every 24 hours, while Earth orbits around the Sun every 365 and quarter days. 34. Daylight hours are equal to night hours approximately in spring and autumn. 35. Nitrogen is essential for greening plant leaves. 36. phosphorus is essential for strengthening of plant roots. 37.potassuim element is essential for healthy plant growth. 38. Proton charge is equal to electron charge in the magnitude but opposite in the type. 39. The mass of subatomic particles is measured in atomic mass unit. 40 The sphinx state is formed of limestone rocks which composed of calcium carbonate substance. 41. The proton mass is equal to the neutron mass. 42. The mass of electron is negligible compared to the mass of both protons and neutrons. 43. The most important types of fertilizers is NPK 44. Nitrogen element is essential for greening of plant leaves, while phosphorus element is essential for strengthening plant roots. 45. potassium element is essential for healthy plant growth. 46. Each of the first four energy levels can be saturated with number of electrons determine by the relation ………………….. , where (n) represents the……………….of main energy level. 47.The energy of an electron increases as the energy level that revolved in moves farther from nucleus……………………. 48. The difference between mass number and atomic number equals the number of …………. 49. The only liquid metal in the modern periodic table is ……………… while the only non-metal in the modern periodic table is ……………………… 50. group (1A) in modern periodic tables called …………….. ,while group (7A) is called ……………………………. 51.Elements exist at the end of each periods of modern periodic table is called ………………. 52. ……………….. is the most active metals, while ……………. is the most active non- metal. 53. The ………….. block occupies the middle of periodic table and called transition metals and it begin to appear in period……..and they called transition metals. 54.Electrons revolve around the nucleus in ………….main energy levels. 10 55.Each main energy level consists of number of energy……………………. 56.In inert gases the electron configuration end with……….. electrons except ………….which end with 2 electrons. 57.All elements in group (1A) are……………except………….is nonmetal. 58.In the same period, the atomic number of an element exceeds that of preceding element by………..electron. 59.In the same group of period (2) and (3) the atomic number of an element exceeds that of preceding element by………..electrons. 60.Metal atoms tend to ………………….. their valence electrons to reach the stable electron configurations of noble gas and convert into ………….. ion. 61. Non-metal atoms tend to …………….. one electron or more to reach the stable electron configuration of noble gas and converts into …………….. ion. 62. The outermost energy level in …………. is complete with 8 electrons, except helium. 63. when an atom converts into ion, the number of ………. remains constant without change. 64. When an atom converts into ion, the number of ………………….. changes. 65. The number of electrons in positive ion is …………… than number of protons, while the number of electrons in negative ion is …………… than number of protons. 66. In positive ion carries the number of …………. charges equal to the number of ………….. electrons. 67. In negative ion carries a number of …………… charges equal to the number of ………… electrons. 68. Among the types of chemical bonding are ……….……… and ……….………… 69. ……………………are neutrally charged because the number of positive charges equals the number of negative charges. 70…………. compound reacts with caustic soda (sodium hydroxide solution), while …………. compound doesn't react with it. 71. ………………. molecule is the simplest molecule of an organic compound. 72. Methane molecule consists of one carbon atom is bonded four hydrogen atoms through ………………………….… bonding. 73.If single materials rubbed with a material higher in the series, it becomes ………… charged, while if rubbed with material lower in series, it becomes……..…… charged 74. The charge formed on the ebonite rad when rubbed with piece of silk is ………….. 75. The charge formed on the glass rod when rubbed with the piece of silk is …………….. 76. In electrostatic plating the object to be plated is charged with …………..electric charge, while the paint spray is charged with ……………..electric charge. 77. The nearest inert gas to 17Cl , 16S , 19K and 20Ca is ……………., while the nearest inert gas to 11Na , 7N, 8O and 9F is……………………… 78.The nearest inert gas to 3Li and 4Be is …………………… 79. Carbon atoms can be bind each other in organic compounds in the form of ……………, ………………… and …………… 80. The ………….. and ……………… of electroscope are made of conductive materials. 11 81. The electroscope is known as………..………. 82. The magnetic field lines start from ……..… pole of magnet and end at the ……… pole. 83. Weak electric charges are measured using a device known as …………. and are measured in units of…………………. 84. Electric force lines start from …………… charge and end at ……………….. charge. 85. The mutual attraction force depend on ………………and ………………… 86. Gravitational force is a mutual force between two objects, acting on each of two objects. by …………. magnitude but in …………… directions. 87. Gravitational force increases as masses of two objects …………., and decreases as the distance between the center of two objects………………… 88. Tides are at their peak when the moon is either …………. or…………………… 89. The weight of an object ……………………. as its mass increases. 90. The Earth's gravitational field intensity. is approximately……………. 91. The magnitude of the force of gravity in outer ………… is ……………… 92. when you move away from Earth's center, the Earth's gravitational field intensity will………….. 93.When you move closer to the Earth's center the gravitational field intensity will…..…… 94. The living organisms classified according to ………………. and ………………. 95.The living organisms divided into ………………. and ………… according to the number of cells. 96.The living organisms divided into …………. and …………… according to the structure of cells. 97.The cells of unicellular organisms are ………….. which means the cells performs all vital process. 98.The cells of multicellular organisms are …………..which means cells are vary in the shape and structure. 99.The cells of multicellular organisms are…………… which means each group of cells perform specific vital processes. 100.The bacterial, animal and plant cells all share the presence ……………., ……………. and ribosomes. 101.The Plant cell share with animal cell the Presence of nucleus, ……………and ……………. 102.The plant cell differs from the animal cell in the presence large vacuole, …………….. and ………… 103. The animal cells differ from the plant cell in the presence of ……. and …………… 104.The composition of muscular tissue from lang muscle cells allow it to perform the functions of ………………….and……………. 105…………… are simple in Structure, small in size and many cell organelles are missing. 106…………… may be unicellular or multicellular, relatively large in size and they contain many cell organelles. 107.The ratio of gravitational field intensity on the Earth's surface and gravitational field intensity on the moon surface is……….:……….. 12 Put (✓) or (x) for the following statement: 1. Excessive use of fertilizers is harmful to plants, soil and human health( ) 2. The electron's energy equals the energy of the level it revolves in ( ) 3. Hydrogen element has three isotopes ( ) 4. Protium nucleus doesn't contain neutrons ( ) 5. Protons is subatomic particle which has smallest mass ( ) 6. Water has higher viscosity than honey ( ) 7. the material thus has density less than density of water sinks on its surface, while material that has density greater than it float ( ) 8. Aerogel sheet is affected by high elevation in temperature ( ) a. Group(1A) is called Alkali metals, while group (2A) is called alkaline earth metals( ) 9. Group (7A) is called inert gases, while zero group is called halogens ( ) 10. In group (1A) by increasing atomic number the atomic radius increases, while melting and boiling points decreases ( ) 11. In group (7A) by increasing the atomic number from top to bottom the atomic radius, melting point and boiling point decreases ( ) 12. The chemical properties of elements depend on the number of electrons in outermost energy level in their atoms ( ) 13.Li and k are solid element at room temperature (25 oC) because melting and boiling points are lower than room temperature ( ) 14.The chemical activity of non-metals increases with increasing the atomic number 15.The chemical activity of metals decreases with increasing atomic number ( ) 16. d- block is located at the bottom of periodic table and its elements are metals( ) 17. The atomic number is the number of positive protons inside the nucleus ( ) 18. Each period of the modern periodic table starts with metal element and end with noble (inert) gas element ( ) 19.The atomic radius is measured in picometer ( ) 20.The ancient Greek philosophers believed that matter was formed of small indivisible parts called atom ( ) 21.Daylight hours are greater than night time hours in summer, while daylight hours are less than night time hours in winter ( ) 22.Charging by contact causes electroscope disc and the two gold leaves to acquire different type of charge as the rod( ) 23.When a magnet is suspended freely, it always take a certain direction.( ) 24. When single magnet is divided into. Several parts, each part of them forms new magnet two poles( ) 25.The South-seeking pole symbolized by S, and marked mainly by blue color ( ) 26. The North - seeking pole symbolized by N and marked mainly by red color ( ) 27. It is possible to obtain a single (an isolated) magnetic pole solely ( ) 28. The Natural magnet rock was discovered in magnesia of ancient Greec( ) 13 29. Forensic and criminal investigation experts use magnetic brush and iron fillings in criminal investigations to reveal the clear fingerprints ( ) 30. The number of energy level in positive ion is less than the number of energy level in its atom. ( ) 31.The number of energy level in negative is more than the number of energy level ( ) 32. Ionic bonding can't occur between two. atoms of metal elements or between to nonmetal element ( ) 33. Most of ionic compounds dissolve in water and have low melting and boiling points( ) 34.The physical state of sodium chloride is gas, while hydrogen chloride is solid ( ) 35. Ionic bonding produce molecules of compound or element molecules ( ) 36. Covalent bonding produce only molecule of compounds ( ) 37. The difference between the elevation and the recessional water in the Bay of Fundy in Canada during tides reaches 19 meters( ) 38. Tides occur periodically and regularly once daily every 24 hours( ) 39. Tides used to generate electricity as source of renewable Energy( ) 40. Tides used to cleanse water bodies From impurities( ) 41. The electric forces and magnetic forces can be either attractive or repulsive forces site, while gravitational Forces only attractive forces( ) 42. Every mass of 1 kg on Earth's surface is attracted towards its center with a force of approximately 10N ( ) 43. The weight of body decreases as you approach the Earth's center( ) 44. The magnitude of mass doesn't change with changing object's position, while the weight change( ) 45. Prokaryotes can't form stem cells because they are composed of single, unspecialized cell ( ) 46.Energy and matter can be transformed into one another) ) 47.The global warming caused by the decrease of carbon dioxide gas that lead to elevation of For this temperature ( ) 48. The plant respiration occurs continuously throughout day only ( ) 48.Cellular respiration occurs in mitochondria in eukaryotic cells and it occurs throughout day and night) ( 49. Water vapor and carbon dioxide gas get rid of out the body through kidneys in form of urine. 50.Euglena mover by flagellum) ( 51. The movement of plants is locomotion ( ) 52. Typhoid disease transmitted through ingesting food or drinking water Contaminated with entamoeba Histolytica ) ( 53. Mercury planet contains active volcano ( ) 54. There are many active volcano in Venus and Earth) ( 55. The Color of Uranus planet is blue while the color of Neptune is greenish blue) ( 56. The inner planets are gases planets, while outer planet are rocky Planets) ( 57.At the period between sunrises and noon the apparent heigh of the sun decease.) ( 58. the length of shadow is sunset the shortest ( ) 14 59. At noon, the sun apparent height reaches its highest Point and the length of shadow is the longest) ( 60.Throughout the day the apparent height of the sun increases, the shadow length will increase ( ) 61.The moon orbits the Earth from west to east ( ) 62. When the Earth lies between the moon and the sun the moon appears complete bright disc ( ) 63. When the moon lies between the Sun and the Earth, the moon appears opaque disc( ) Calculate the atomic number for the following: 1. Element that located in period (2), group (6A) (……………………) 2.Element that located in period (1) and zero group (………………………) 3. Element that located in period (1) and zero group (………………………) 4.Element locates in the period (2) and group (5A) the atomic number(………………..) 5. Element that located in group (4) and it has binary valence (………………...) 6. An element is trivalent and it is located in the third period of modern periodic table.(…...) Mention the number that indicates the following: 1.The number of elements in modern periodic table (…………….) 2. The number of groups in the modern periodic table (…………..) 3. The number of periods in the modern periodic table (………….) 4- The number of blocks in the modern Periodic table (…………..) 5. The number of groups in P-block (…………………) 6. The number of groups in s- block (………………..) 7. The number of groups in d – block(……………….) 8. The number of electrons in the last energy level of argon (………………………..) 9. The number of noble gases in the modern periodic table (…………….…………) 10. The number of non-metal gases in the modern periodic table.(…………………..) 11. The number of liquid elements in the modern periodic table (………..…………) 12. The number of elements in period one (…………………) 13. The number of elements in period two (…………………..) 14.The number of elements in period three(………………….) 15. The number of elements in period Four (…………………………) 16.The number of gaseous elements in the modern periodic table (……………….) 17. The number of elements in Mendeleev period table (…………………….) 18. The number of elements that aren’t available in the Earth’s crust (…………………..) 19.The number of main energy levels that saturated by electrons (………………) Who……………………? 1. The Scientist proposed the first scientific Theory (……………………..) 2. The scientist proposed the first model of the atom based on experimental basis(…………….) 15 3. The scientist who won the Noble prize in Chemistry in 1908 (……………………) 4. A Scientist who arranged elements in his table in ascending order a according to their atomic mass.(…………………………) 5. A Scientist who added zero group (…………………..) 6. Scientist who discovered the nucleus of atom contains positively charged protons(…………….……..) 7. Scientist who proposed simplified method to represent the number of valence electrons around the symbol of element. (…………………………) 8. A Scientist who arranged elements in his table in ascending order a according to their atomic number.(…………………………) Locate the following element in the modern periodic table (period-group-block): 1.73Li…………………………………………………………………………………… 2. 2311Na……………………………………………………………………………….. 3. 2010Ne……………………………………………………………………………….. Problems: 1.Calculate the weight of an object whose mass equals 6000 g on the Earth's surface (Given that the Earth's gravitational field intensity = 10 N/ kg. ………………………………………………………………………………………………… ………………………………………………………………………………………………… 2.Calculate the weight of an object whose mass equals 4 kg on the Earth's surface (Given that the Earth's gravitational field intensity = 10 N/ kg. ………………………………………………………………………………………………… ………………………………………………………………………………………………… 3. Calculate the mass of an object on the moon whose weight equals 300 N on the Earth's surface (Given that the Earth's gravitational field intensity = 10 N/ kg) ………………………………………………………………………………………………… Cross the odd word out: 1.Gold - iron- Steel – Nickel. 2.Cobalt – Copper - iron – Nickel. 3.Electrostatic forces -Magnetic Forces - gravitational forces- friction forces. 4.Collision forces - Elasticity forces- Magnetic Forces - friction forces. 5. Jupiter – Saturn - Earth - Neptune. 6. Jupiter – Uranus - Earth – Neptune. 7.Mercury – Venus – Mars – Jupiter. 8. Mercury – Venus – Uranus - Earth. 9.bacteria – amoeba – euglena – paramecium. 10.Bread mold fungus – Mushroom fungus – beans – yeast fungus. 11. watermelon - Zucchini – Cucumber- Lettuce 12. Orange – Lettuce – wheat – watermelon. 16 Mention the difference between: 1.Ionic compound and covalent compound. ………………………………………………………………………………………………… ………………………………………………………………………………………………… 2.Summer season and winter season. ………………………………………………………………………………………………… ………………………………………………………………………………………………… 3.Prokyratoes and Eukaryotes. ………………………………………………………………………………………………… ………………………………………………………………………………………………… 4.Unicelleur organisms and multicellular organisms ………………………………………………………………………………………………… …………………………………………………………………………………………………. 2- Dysentery and Typhoid. ………………………………………………………………………………………………… ………………………………………………………………………….……………………… 3-Mercury planet and Jupiter planet. ………………………………………………………………………………………………… ………………………………………………………………………………………………… 4-Earth planet and Neptune planet. ………………………………………………………………………………………………… ………………………………………………………………………………………………… 5.Homogeneous and heterogenous mixture ………………………………………………………………………………………………… ………………………………………………………………………………………………… Mention summer crops and winter crops. Summer crops: watermelon - Zucchini - Cucumber – Onion. winter crops: Orange – Lettuce – wheat - clover Mention the impacts of gravitational force. stability of the object on the Earth - the black hole phenomenon - Orbital motion. tidal phenomenon. Mention one examples: 1. Monatomic molecule (……………………) 2 diatomic molecules (……………………) 3. Polyatomic molecule (……………………) 4. Heterogeneous mixture (…………………..) 5. Homogenous mixture (solution) (……………………….) 6.Physical separation method (……………………………..…………………..) 7.Chemical separation method (……………………………………………….) 17 8.Organic compound (……………………………………………….) 9. Inorganic compound (…………………………………………….) 10. Element (……………………………………..) 11. Compound (…………………………………) 12. Liquid metal (……………………………..) 13. The liquid nonmetal (…………………………) 14.Prokaryotes microbes (…………………………) 15.eukaryotes microbes(………………………….) 16. Ionic bonding (………….……………..) 17. Covalent bonding (…………………………….) 18. Single covalent bonding (…………………………………….) 19. Double covalent bonding (……………………….) 20. Triple covalent bonding (……………………………) Mention the ways of entering harmful microbes the human bodies: Breathing - Eating ingesting Food - Penetration of skin and reach the blood stream. Mention Some healthy habits for disease prevention Washing vegetables and fruits before eating - Washing hands before eating and after using bathroom - Brusing teeth after meals - Not leaving food uncovered. - Drinking a lot of water. Mention the symptoms of Dysentery disease? Repeated bloody diarrhea - stomach pain - Loss of appetite - weight loss - Continuous fatigue. Mention the symptoms of Typhoid disease. High Fever - Fatigue - Stomach and muscle pain – headache - Flatulence. Mention the importance of: 1.Lactic acid bacteria It is used to make yogurt which rich with protein and Calcium 2 -Penicillium Roquefort fungus It is used in making Roquefort cheese which responsible for its distinctive taste and various colors 3. Penicillium Notatum fungus. It is used to Kill bacterin that causes Some diseases as diphtheria and tonsillitis. 4-Yeast fungus. -It is Source of vitamin (B) complex and it is rich in antioxidants. -It is used in making bread and ethyl alcohol (ethanol) production Give reason for. 1.The planets don't collide during orbiting the sun. Because they orbit the sun in elliptical paths at different distances from it 2. The mass of the atom is concentrated in the nucleus Because the mall of electrons is negligible compared to the mass of protons and neutrons. 3. The atom is electrically neutral 18 Because the number of negative electrons revolve around the nucleus is equal to the number of Positive Protons inside the nucleus. 4. The mass number is usually greater than atomic number Because the mass number equals the sum of number of Protons and neutrons, while the atomic number equals the number of protons only. 5.Bacteria, Yeast Fungus and protozoa are classified unicellular organisms. Because their bodies consist of single cell which can't be seen by naked eye 6. plants and animals are classified multicellular organisms Because their bodies consist of many cells. 7. Bacteria are classified as prokaryotes. Because their genetic material is found in the Cytoplasm and not Surrounded by nuclear membrane. 8.yeast fungus and euglena are classified as eukaryotes. Because their genetic material is surrounded by nuclear membrane that separating it from cytoplasm. 9.Plants and green algae are considered autotrophs(producers(. Because they produce their own food during Photosynthesis process that occurs in chloroplasts. 10.Humans and animals are considered heterotroph (Consumers) Because they depend directly or indirectly on producers to get food. 11. Lithium, Sodium and potassium are from alkali metals. Because the outermost energy levels of them contain one electron 12. The symbol of sodium Na and not So as expected. Because elements whose English name differs from Lalin names are symbolized according to Latin names. 13. Table salt in water is homogenous mixture Because Its components can't be distinguished by naked eye. 14. Sand in water mixture is heterogenous mixture Because its components can be distinguished by naked eye 15. Hydrogen is classified as element, while Water is classified as compound Because hydrogen can't be dissociated into simpler form, while water its components can be Separated into oxygen and hydrogen by electrolysis. 16. Steel and iron are magnetic materials Because they are attracted to magnet. 17.Gold and silver are non-magnetic materials Because they aren't attracted to magnet. 18. The rainfall and the falling of the objects towards the Earth. Due to effect the gravitational force. What happens when? 1.Magnet is brought close to mixture of aluminum filling and iron filling. The magnet will attract iron filling only. 2. When magnet is suspended freely 19  It always takes certain direction 3. A magnet is divided in to several Parts. each part of them forms new magnet with two poles, one is North and the other south. 4. Absence of gravity on the Earth. The objects will float and can't stable on the Earth surface, the tide phenomenon will not happen. 5.The entire moon is located within shadow of the Earth. The total lunar eclipse will happen and the moon appears dark disc 6. The entire moon is located within Penumbra of the Earth The moon appears as dimly lit red disc and No eclipse will happen. 8. Part of the moon of the moon being within Earth's shadow as it orbits Farth. The partial lunar eclipse will happen and the moon appears partially dark. 9.If yogurt containers weren't kept in refrigerator after preparation. The activity of lactic acid bacteria will continue which increase the yogurt acidity. 10.Absence of root nodular bacteria in roots of leguminous plants as pea and beans The Plant can't get nitrogen so it can't form proteins to help the plant to growth of cells and tissues. 11.Farmers leaves the roots of leguminous plants in the soil The root will decompose by decomposition bacteria into nitrogenous compound that soluble in water which increase soil fertility. 12.Closing glass rod charged by positively charge to disc of electroscope charged by Positive charge. The gold leaves divergence will increase 13.Closing glass rod changed by positively charge to disc of electroscope charge by negative charge The gold leaves divergence will decrease. 14.Closing ebonite rod charged by negative charge to disc of electroscope charged by Positive charge. The gold leaves divergence will decrease. 15.Closing ebonite rad charged by negative charge to disc of electroscope charged by negative charge The gold leaves divergence will increase. What are the results of: rotation of Earth around its axis. The Day and night cycle - the apparent motion of the sun 2. revolution of Earth around the sun? The cycle of four seasons. 3. Protium nucleus doesn't Contain neutrons the atomic number of protium equals its mass number 20