What is this?
steam
What is this?
flow
What is this?
solid
What is this?
liquid
What is this?
gas
What is this?
heat
What is this?
ice
What is this?
freeze
What is this?
melt
Water is a __________.
liquid
We put __________ in drinks to make them cold.
ice
On a hot day, ice cream can __________.
melt
Water in a river can __________ over stones.
flow
