Question 1
A sample of a substance has a shape that is determined by its container.
What are the possible states of this sample?
A
gas, liquid and solid
B
gas and liquid only
C
gas and solid only
D
solid and liquid only
Question 2
What are the correct terms for each change of state?
liquid to solid
liquid to gas
solidification
condensation
melting
condensation
solidification
evaporation
melting
evaporation
Question 3
A man puts some ice into a glass of water on a warm day.
After a short time, he notices that the ice disappears and that water droplets appear on the outside of the glass.
Which two changes of state are taking place?
A
condensation and freezing
B
condensation and melting
C
boiling and melting
D
freezing and evaporation
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