Water

Adding heat and removing heat causes matter to change its state. What is it called when a solid is formed by removing heat from a liquid?

• melting

• condensation

• freezing

• evaporation

Scarlet noticed water droplets on the outside of her glass of ice water. Which of the following is the best explanation for why this happened?

• Water vapor from the air turned to liquid on the outside of the glass.

• Water leaked through the glass.

• Water vapor in the air turned to solid on the outside of the glass.

• Liquid water from the air turned to water vapor on the outside of the glass.

What type of phase change is happening as water changes into ice?

• condensation

• melting

• freezing

Brad has a glass filled with liquid water. He puts the glass in a freezer that is at 0 degrees celsius and leaves it there.  He checks it later.  Which of the following states is most of the water in when he returns?

• gas

• solid

• unable to determine

• liquid

Evaporation is a phase change from a _____ to a ____.

• liquid; solid

• liquid; gas

• gas; liquid

• solid; liquid

What type of phase change is happening as ice changes to water?

• melting

• condensation

• freezing

When enough heat energy is lost by water vapor, the water vapor can

• condense

• evaporate

• freeze

• melt

What has to be added in order for solid ice to melt into liquid water or liquid water to evaporate into steam?

• sand

• cold air

• salt

• heat

To change solid ice into a liquid water you must ____________.

• add heat

• remove heat

Tonya placed a cup of water outside on a hot day. She left the cup outside all day and returned later to find that the liquid water had ______ to become a gas.

• evaporated

• melted

• condensed

• frozen