Physical Changes: Freezing and Melting

The video explains the nature of ice, which is frozen water, and describes the processes of freezing and melting. Freezing occurs when water cools below 32°F (0°C), turning from liquid to solid. Conversely, melting happens when ice warms and reverts to liquid. These processes are physical changes, as demonstrated by ice melting in spring or on a counter.

What is the state change called when water turns into ice?

• Condensation

• Freezing

• Evaporation

• Sublimation

At what temperature does water freeze into ice?

• 100 degrees Celsius

• 50 degrees Fahrenheit

• 0 degrees Celsius

• 32 degrees Celsius

What happens to ice when it is exposed to heat?

• It freezes

• It condenses

• It evaporates

• It melts

Which of the following is an example of melting?

• Ice turning into water

• Steam forming from water

• Water boiling

• Water freezing into ice

What type of change are freezing and melting considered?

• Nuclear changes

• Physical changes

• Chemical changes

• Biological changes