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Questions and Answers
What is the process of cracking in petroleum chemistry?
What is the process of cracking in petroleum chemistry?
Which of the following hydrocarbons is not likely to be present in petrol?
Which of the following hydrocarbons is not likely to be present in petrol?
What is the oxidation number of Sulphur in H2SO4?
What is the oxidation number of Sulphur in H2SO4?
What is the major reason why chemical reactions occur among elements?
What is the major reason why chemical reactions occur among elements?
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What is the arrangement of ions in a regular pattern in a solid crystal called?
What is the arrangement of ions in a regular pattern in a solid crystal called?
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In Electrovalency, why do most metallic atoms with few valence electrons give out electrons?
In Electrovalency, why do most metallic atoms with few valence electrons give out electrons?
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What is the formula for trioxonitrate (v) acid?
What is the formula for trioxonitrate (v) acid?
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Which law is supported by the equation P1V1 = P2V2?
Which law is supported by the equation P1V1 = P2V2?
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What is the unit of the number of moles of a gas (n) in the ideal gas equation PV = nRT?
What is the unit of the number of moles of a gas (n) in the ideal gas equation PV = nRT?
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What is the effect of adding sodium chloride to ice?
What is the effect of adding sodium chloride to ice?
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What is the term for the phenomenon where the atmospheric pressure equals the saturated vapour pressure?
What is the term for the phenomenon where the atmospheric pressure equals the saturated vapour pressure?
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What is the term for the escape of molecules with more than average kinetic energy?
What is the term for the escape of molecules with more than average kinetic energy?
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Which of the following ions is acidic?
Which of the following ions is acidic?
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What is the basicity of ethanoic acid, C_2H_4O_2?
What is the basicity of ethanoic acid, C_2H_4O_2?
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What is the PH value of a neutral solution?
What is the PH value of a neutral solution?
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What happens to the shape of an electrovalent crystal when a force is applied to it?
What happens to the shape of an electrovalent crystal when a force is applied to it?
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What is the atomicity of ozone?
What is the atomicity of ozone?
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What is the smallest particle of a matter that can exist in a free state?
What is the smallest particle of a matter that can exist in a free state?
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What is the bond type in a diatomic nitrogen gas?
What is the bond type in a diatomic nitrogen gas?
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What is the bond type between a copper(II) ion and water molecules?
What is the bond type between a copper(II) ion and water molecules?
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What is the characteristic of rare gases that makes them stable?
What is the characteristic of rare gases that makes them stable?
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What is the same in isotopes of an element?
What is the same in isotopes of an element?
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A sample of gas occupies 400.0cm^3 at 25°C and 1 bar pressure. What volume will it occupy at 200°C at the same pressure?
A sample of gas occupies 400.0cm^3 at 25°C and 1 bar pressure. What volume will it occupy at 200°C at the same pressure?
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Study Notes
Chemistry SS1 3rd Term Examination
Gases and Gas Laws
-
P1V1 = P2V2supports Boyle's law - The unit of
nin the ideal gas equationPV = nRTis moles (c) - The phenomenon where atmospheric pressure equals saturated vapour pressure is called normal pressure (d)
Acids and Bases
- The presence of sodium chloride in ice lowers the freezing point of sodium chloride (d)
- The escape of molecules with more than average kinetic energy is called evaporation (c)
- Ethanoic acid
C2H4O2has a basicity of 1 (b)
Bonds and Compounds
- The types of bonds in
H3O+are covalent and coordinate covalent (b) - The oxidation number of sulphur in
H2SO4is 6 (d) - Trioxonitrate (V) acid is written as
HNO3(b)
Chemical Reactions
- The major reason chemical reactions occur among elements is that they have a tendency to attain the nearest noble gas structure (a)
Electrovalency and Crystal Structure
- In electrovalency, most metallic atoms with few valence electrons give out electrons because they are unstable (a)
- The arrangement of ions in a regular pattern in a solid crystal is called a lattice (c)
- If force is applied to an electrovalent crystal, the shape and crystal structure may be deformed (d)
Atomic Structure and Molecules
- Atomicity of ozone is 3 (c)
- A molecule is the smallest particle of a substance that can exist in a free state (a)
- The electronic configuration of an element X with atomic number 9 and mass number 19 is 2,7 (a)
Chemical Bonding
- The bond type in a diatomic nitrogen gas is a triple covalent bond (b)
- The bond type between copper(II) ion and water molecules is a dative covalent bond (d)
- The bond between two iodine molecules is a van der Waal's force (d)
Inter molecular Forces
- Bonds between a highly electronegative atom and a hydrogen from another molecule are called hydrogen bonds (a)
- Rare gases are stable because they have duplet or octet electronic configurations in the outermost shells of their atoms (d)
- Isotopes of an element have the same atomic number (d)
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Description
This quiz assesses student understanding of chemistry fundamentals, covering topics such as gas laws and ideal gas equations. Questions range from identifying supported laws to unit conversions.
