Changes in Water

A student has two glasses with the same amount of water in each. She puts a lid on one glass and not the other. After two day she observes the glasses. What most likely happened?

• The glass with the lid evaporated, and the glass without the lid melted.

• The glass with the lid condensed, and the glass without the lid evaporated.

• The glass with the lid melted, and the glass without the lid condensed.

• The glass with the lid evaporated, and the glass without the lid condensed.

Water can change forms from solid to liquid to gas. When water changes from liquid to gas, what is this called?

• condensation

• evaporation

• freezing

• melting

What causes water droplets to form on the outside of a cup?

• boiling

• evaporation

• melting

• condensation

Tyler puts a pot of water on the stove. He watches the water bubble. What type of change is taking place as the water is heated?

• liquid is melting to become a solid

• liquid is freezing to become a solid

• liquid is boiling to become a gas

• solid is melting to become a liquid

Mrs. Belinger and Mrs. Flay were timing how long it takes a Hershey Kiss to melt. They size of the Hershey Kisses was the same and they did the experiment on the same day at the same time. Mrs. Belinger's Hershey Kiss melted in 2 minutes. Mrs. Flay's melted in 8 minutes. Which of the following is most likely to have caused the difference in melting time?

• Mrs. Belinger's was in the shade.

• Mrs. Flay's was colder

• Mrs. Flay's was more frozen

• Mrs. Flay's was in the shade.

When water changes from a gas to a liquid. What is this called?

• condensation

• evaporation

• cooling

• freezing

What causes condensation?

• boiling

• evaporating

• cooling

• freezing

What happens when something melts?

• melting occurs as a gas freezes

• melting occurs as a gas cools

• melting occurs as a solid changes to a liquid

• melting occurs when a liquid changes to a solid

What causes a bathroom mirror to become foggy after a hot shower?

• water froze on it

• water condensed on it

• water melted on it

• water evaporated on it

What happens when you add heat to an ice cube?

• it melts

• it turns in to a gas

• it says frozen

• it boils