Kinetic Theory of Matter and Gas Laws
Chemistry · 50 practice questions
Phenomena supporting the kinetic theory (melting, vaporization, boiling, freezing, condensation) in terms of molecular motion and Brownian movement; Boyle's, Charles's, Graham's and Dalton's (partial pressure) laws; combined gas law, molar volume and atomicity of gases; the ideal gas equation (PV = nRT); relationship between vapour density and relative molecular mass.
- Apply the theory to distinguish between solids, liquids and gases.
- Deduce reasons for change of state.
- Draw inferences based on molecular motion.
- Deduce gas laws from given expressions or statements.
- Interpret graphical representations of these laws.
- Perform calculations based on these laws, equations and relationships.
Try a few questions
- Practice question 1
A manometer is a laboratory instrument mainly used to measure
- A.the exact volume of a liquid
- B.the temperature of a reaction mixture
- C.the concentration of a solution
- D.the pressure of a gas
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D. the pressure of a gas
Manometers are specifically designed to give a direct reading of gas pressure.
- Practice question 2
The atomicity of an oxygen molecule, O₂, is
- A.2 (diatomic)
- B.1 (monatomic)
- C.3 (triatomic)
- D.4 (tetratomic)
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A. 2 (diatomic)
Oxygen gas exists as diatomic molecules, each made of two oxygen atoms.
- Practice question 3
Charles's law states that, at constant pressure, the volume of a fixed mass of gas is
- A.inversely proportional to its absolute temperature
- B.independent of its temperature
- C.directly proportional to its absolute temperature
- D.directly proportional to the square of its temperature
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C. directly proportional to its absolute temperature
Charles's law describes a direct relationship between volume and absolute temperature at constant pressure.
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