Question

activity (continued from previous page)

1. define: a phase change is a change from one state to another, such as from a liquid to a gas. based on what you have read in the gizmo, fill in the blanks with the words \liquid,\ \gas,\ or \solid\ to define each change.

evaporation: change from a __________ to a __________
condensation: change from a __________ to a __________
melting: change from a __________ to a __________
freezing: change from a __________ to a __________

1. partially visible are evaporation,

Explanation:

• Evaporation: In the water cycle and phase change concepts, evaporation is when a liquid (like water) turns into gas (water vapor). So it's a change from liquid to gas.
• Condensation: This is the reverse of evaporation. Gas (water vapor) cools and becomes liquid (like water droplets forming on a cold surface). So it's gas to liquid.
• Melting: When a solid (like ice) is heated, it becomes a liquid (water). So solid to liquid.
• Freezing: When a liquid (water) is cooled, it becomes a solid (ice). So liquid to solid.

Answer:

Evaporation: Change from a liquid to a gas.
Condensation: Change from a gas to a liquid.
Melting: Change from a solid to a liquid.
Freezing: Change from a liquid to a solid.