1. Which of the following is an example of a solid turning into
another state of matter?
a. water freezing
b. tearing a piece of paper
c. snow becoming a puddle d. breaking a chair into pieces
2. What happens to water when it boils?
a. It is changed into a solid. b. It is changed into a liquid.
c. It is changed into a gas. d. It does not change at all.
3. Which of the following processes requires thermal energy?
a. condensation b. cooling c. evaporation d. freezing
4. Gallium is a metal that will melt when exposed to the heat of
your hand. Which phase change does Gallium undergoes?
a. gas to a solid
b. liquid to a gas
c. solid to a gas
d. solid to a liquid
5. Condensation is a process where gas is changed into a liquid.
Which of the following is NOT an example of condensation?
a. Smoke from boiling water.
b. Fog along the highway leading to Baguio.
c. Water that collects outside the glass of cold drink.
d. Ground-level fog that can be seen on some cold days.



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