Question

A cylinder at left has balls stacked near its bottom with an arrow leading to a cylinder at right with balls evenly spaced throughout the cylinder.
Which change of state is shown in the model?

condensation
evaporation
sublimation
deposition


During which change of state would the volume of a substance increase the most?

deposition
melting
vaporization
sublimation


On a cool morning, Uyen’s breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen seeing her breath in this way?

melting
condensation
deposition
sublimation

Answer 1

1) Evaporation — the particles go from being packed near the bottom (liquid) to spread out through the container (gas).

2) Vaporization — changing a liquid to a gas produces the largest increase in volume (gas occupies much more volume than the condensed phases).

3) Condensation — the warm, moist breath (water vapor) cools and changes to tiny liquid droplets that you see as a cloud.