8 practice sets · Page 1 of 1
What is the main cause of evaporation?
Decrease in temperature
Increase in pressure
Increase in temperature
Decrease in volume
Correct Answer: C — Increase in temperature
Explanation:
Higher temperature increases particle energy, causing evaporation.
What is the boiling point of water?
0°C
100°C
50°C
200°C
Correct Answer: B — 100°C
Explanation:
Water boils at 100°C under standard atmospheric pressure.
Which of the following processes involves the change of gas into a liquid?
Evaporation
Freezing
Condensation
Melting
Correct Answer: C — Condensation
Explanation:
Condensation is the process in which gas changes into liquid on cooling.
What is plasma?
A solid state of matter
A liquid state of matter
A gaseous state with no particles
A state of matter with charged particles
Correct Answer: D — A state of matter with charged particles
Explanation:
Plasma is an ionized state of matter containing charged particles.
Which of the following substances can exist in all three states of matter?
Nitrogen
Oxygen
Water
Carbon dioxide
Correct Answer: C — Water
Explanation:
Water exists as ice, liquid water, and steam under different conditions.
What is the process of a solid turning directly into a gas called?
Freezing
Melting
Sublimation
Condensation
Correct Answer: C — Sublimation
Explanation:
Sublimation is the direct conversion of a solid into a gas without passing through the liquid state.
What is sublimation?
Solid to gas
Gas to solid
Liquid to solid
Liquid to gas
Correct Answer: A — Solid to gas
Explanation:
Sublimation is the direct change of a substance from solid to gas.
Which state of matter has no definite shape but a definite volume?
Solid
Liquid
Gas
Plasma
Correct Answer: B — Liquid
Explanation:
Liquids have a definite volume but take the shape of their container.
