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Questions and Answers
What is the chemical formula for water?
What is the chemical formula for water?
H2O
What is the chemical formula for glucose?
What is the chemical formula for glucose?
C6H12O6
What is the chemical formula for hydrogen peroxide?
What is the chemical formula for hydrogen peroxide?
H2O2
What is the chemical formula for ammonia?
What is the chemical formula for ammonia?
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What is the chemical formula for methane?
What is the chemical formula for methane?
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What is the name of the group of elements that includes lithium, sodium, and potassium?
What is the name of the group of elements that includes lithium, sodium, and potassium?
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What is the name of the group of elements that includes beryllium, magnesium, and calcium?
What is the name of the group of elements that includes beryllium, magnesium, and calcium?
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What is the name of the group of elements that includes iron, cobalt, and nickel?
What is the name of the group of elements that includes iron, cobalt, and nickel?
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What is the name of the group of elements that includes fluorine, chlorine, and bromine?
What is the name of the group of elements that includes fluorine, chlorine, and bromine?
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What is the name of the group of elements that includes helium, neon, and argon?
What is the name of the group of elements that includes helium, neon, and argon?
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What are the vertical columns on the periodic table called?
What are the vertical columns on the periodic table called?
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What are the horizontal rows on the periodic table called?
What are the horizontal rows on the periodic table called?
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What does the term 'aqueous' mean?
What does the term 'aqueous' mean?
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What does the term 'solid' mean in terms of solubility?
What does the term 'solid' mean in terms of solubility?
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What is the Periodic Law?
What is the Periodic Law?
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What are the general characteristics of acids?
What are the general characteristics of acids?
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What type of elements are located on the staircase of the periodic table?
What type of elements are located on the staircase of the periodic table?
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Which of the following are properties of ionic compounds?
Which of the following are properties of ionic compounds?
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Which of the following are properties of molecular compounds?
Which of the following are properties of molecular compounds?
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What was Dalton's main contribution to the understanding of atoms?
What was Dalton's main contribution to the understanding of atoms?
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What was Rutherford's main contribution to the understanding of atoms?
What was Rutherford's main contribution to the understanding of atoms?
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What was Bohr's main contribution to the understanding of atoms?
What was Bohr's main contribution to the understanding of atoms?
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What was Schrodinger's main contribution to the understanding of atoms?
What was Schrodinger's main contribution to the understanding of atoms?
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What does the term 'magnification' mean in microscopy?
What does the term 'magnification' mean in microscopy?
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What does the term 'FOV' mean in microscopy?
What does the term 'FOV' mean in microscopy?
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What is the function of the cell wall in a plant cell?
What is the function of the cell wall in a plant cell?
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What is the function of the cell membrane in a cell?
What is the function of the cell membrane in a cell?
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What is the function of the nucleus in a cell?
What is the function of the nucleus in a cell?
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What is the function of the cytoplasm in a cell?
What is the function of the cytoplasm in a cell?
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What is the function of the endoplasmic reticulum in a cell?
What is the function of the endoplasmic reticulum in a cell?
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What is the function of the ribosome in a cell?
What is the function of the ribosome in a cell?
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What is the function of the mitochondrion in a cell?
What is the function of the mitochondrion in a cell?
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What is the function of the vacuole in a cell?
What is the function of the vacuole in a cell?
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What is the function of the chloroplast in a plant cell?
What is the function of the chloroplast in a plant cell?
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What is the function of the Golgi apparatus in a cell?
What is the function of the Golgi apparatus in a cell?
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What is the function of the centrioles in a cell?
What is the function of the centrioles in a cell?
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What is the function of the cytoskeleton in a cell?
What is the function of the cytoskeleton in a cell?
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What is diffusion?
What is diffusion?
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What is osmosis?
What is osmosis?
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What is the function of channel proteins in cell membranes?
What is the function of channel proteins in cell membranes?
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What is endocytosis?
What is endocytosis?
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Who was the first person to suggest that the atom was made of smaller parts?
Who was the first person to suggest that the atom was made of smaller parts?
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What are cathode rays?
What are cathode rays?
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What was Rutherford's key proposal about the structure of atoms?
What was Rutherford's key proposal about the structure of atoms?
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What is the atomic number of an element?
What is the atomic number of an element?
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How does an atom become an ion?
How does an atom become an ion?
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How do metals become positive ions?
How do metals become positive ions?
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How do non-metals become negative ions?
How do non-metals become negative ions?
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What is conduction?
What is conduction?
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What is solar energy?
What is solar energy?
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What is insolation?
What is insolation?
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What is the angle of inclination?
What is the angle of inclination?
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What role do atmospheric dust and cloud cover play in Earth's energy balance?
What role do atmospheric dust and cloud cover play in Earth's energy balance?
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What is the angle of incidence?
What is the angle of incidence?
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What is albedo?
What is albedo?
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What is atmospheric pressure?
What is atmospheric pressure?
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What is the Coriolis Effect?
What is the Coriolis Effect?
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What are jet streams?
What are jet streams?
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What is an open system in thermodynamics?
What is an open system in thermodynamics?
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What is an isolated system in thermodynamics?
What is an isolated system in thermodynamics?
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What is the First Law of Thermodynamics?
What is the First Law of Thermodynamics?
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What is force?
What is force?
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What is positive work?
What is positive work?
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What is the Second Law of Thermodynamics?
What is the Second Law of Thermodynamics?
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What is Newton's 1st Law of Motion?
What is Newton's 1st Law of Motion?
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What are scalar quantities?
What are scalar quantities?
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What is gravitational force?
What is gravitational force?
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What is normal force?
What is normal force?
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What is tension force?
What is tension force?
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What is applied force?
What is applied force?
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Study Notes
Chemical Formulas and Names
- H₂O: Water
- C₆H₁₂O₆: Glucose
- O₃: Ozone
- H₂O₂: Hydrogen peroxide
- NH₃: Ammonia
- C₁₂H₂₂O₁₁: Sucrose
- CH₄: Methane
- C₃H₈: Propane
- CH₃OH: Methanol
- C₂H₅OH: Ethanol
- H₂S: Hydrogen sulfide
Atomic Models
- Dalton (Billiard Ball): Atoms are fixed ratios, varying in size, mass, and colour.
- Thomson (Plum Pudding): Discovered electrons; negative charge scattered in a positive sphere.
- Rutherford (Nuclear): Nucleus with positive charge; electrons orbit; mostly empty space.
- Bohr (Planetary): Electrons orbit in fixed energy levels.
- Schrödinger (Quantum): Electrons exist in probability clouds (orbitals).
Periodic Table
- Groups (vertical): Indicate valence electrons.
- Periods (horizontal): Show electron orbits.
- Alkali Metals (Group 1): Most reactive.
- Alkaline Earth Metals (Group 2): Reactive metals.
- Transition Metals: Variable properties.
- Halogens (Group 17): Reactive non-metals.
- Noble Gases (Group 18): Least reactive.
States of Matter and Solubility
- Aqueous: Highly soluble.
- Solid: Slightly soluble.
Chemical Bonding and Properties
- Ionic Compounds: Strong bonds, hard, dissolve in water, high melting point, and conductive.
- Molecular Compounds: Weak bonds, soft, low melting point, non-conductive.
- Properties of Acids: Contain hydrogen, non-metal-based, can be ionic or molecular.
- Properties of Bases: Contain hydroxide, metal-based, always ionic.
Atomic Structure
- Atomic Number: Number of protons in an atom.
- Atomic Mass: Number of protons and neutrons.
- How atoms become ions: Lose or gain electrons.
- Metals as positive ions: Cations (lose electrons).
- Non-metals as negative ions: Anions (gain electrons)
Cell Structures
- Cell Wall: Maintains cell shape.
- Cell Membrane: Controls entry/exit.
- Nucleus: Contains hereditary material, controls activities.
- Nuclear Membrane: Regulates nuclear contents.
- Cytoplasm: Holds organelles in place.
- Endoplasmic Reticulum: Protein production.
- Ribosome: Site of protein synthesis.
- Mitochondrion: Main energy producer.
- Vacuole: Storage.
- Lysosome: Breakdown of waste.
- Chloroplast: Photosynthesis.
- Nucleolus: Produces ribosomes.
- Golgi Apparatus: Processes and packages molecules.
- Centrioles: Involved in cell division.
- Cytoskeleton: Cell's internal framework.
Transport Across Cell Membranes
- Diffusion: Passive movement from high to low concentration.
- Osmosis: Diffusion of water across a membrane.
- Channel Proteins: Hydrophilic channels.
- Carrier Proteins: Hydrophobic, change shape for transport.
- Endocytosis: Molecules enter the cell.
- Exocytosis: Molecules exit the cell.
Physics Concepts
- Magnification: Enlargement of an object.
- FOV (Field of View): Visible sample area.
- Conduction: Thermal transfer through direct contact.
- Convection: Thermal transfer through particle movement.
- Radiation: Transfer of energy via waves or particles.
- Solar Energy/Insolation: Energy from the sun received by an area.
- Angle of Inclination: Earth's tilt in relation to its orbit.
- Atmospheric Dust/Cloud Cover: Affect solar radiation reflection and absorption.
- Angle of Incidence: Angle between a ray and the surface's perpendicular.
- Albedo: Surface's reflectivity.
- Atmospheric Pressure: Pressure from overlying air.
- Wind: Movement of air due to pressure differences.
- Coriolis Effect: Deflection of objects due to Earth's rotation.
- Jet Streams: Fast-moving air bands.
- Open, Closed, Isolated Systems: Matter and energy exchange within systems.
- First Law of Thermodynamics: Energy conservation.
- Force: Push or pull (N).
- Work: Energy transfer (J).
- Positive/Negative Work: Effects on object energy.
- Second Law of Thermodynamics: No 100% energy transfer.
- Newton's First Law: Inertia.
- Newton's Second Law: Force = mass x acceleration.
- Newton's Third Law: Action-reaction.
- Scalar Quantities: Magnitude only.
- Vector Quantities: Magnitude and direction.
- Gravitational Force: Attraction between masses.
- Normal Force: Perpendicular surface reaction.
- Tension Force: Force in a taut rope/cord.
- Friction Force: Force opposing motion.
- Applied Force: Generic pushing/pulling force.
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Description
Test your knowledge on essential chemical formulas and the historical atomic models. This quiz covers key compounds, their names, and the evolution of atomic theories from Dalton to Schrödinger. Perfect for chemistry students learning about molecular structures and atomic behavior.