When does a liquid freeze?
At zero degrees Celsius.
What is evaporation?
Change from liquid to gas.
What are the three states of matter?
Solid, liquid, and gas.
Why is there condensation on this window?
Water vapor in the air touched the cold window and turned into water droplets.
What does it mean to freeze something?
Change from liquid to solid.
What happens to snow and ice in the spring? Why?
It melts from heat.
What happens to lakes and ponds in winter? Why?
They freeze from cold.
What do you call water as a gas?
Water vapor.
What does it mean to melt something?
Change from solid to liquid.
What will make water evaporate faster?
More heat.