Changing States of Matter

If a box of crayons is left in a hot car on a summer afternoon, what change would you expect to observe in the crayons?

• gas changed to liquid

• liquid changed to solid

• solid changed to liquid

• liquid changed to gas

A student took ice cream outside on a summer day. The heat would cause what kind of change?

• a solid becoming a liquid

• a liquid becoming a gas

• a liquid becoming a solid

• a gas becoming a liquid

A drop of water was placed in a hot pan and seemed to disappear. The heat caused the water to....

• melt
• freeze
• evaporate
• gel

Sister and I made popsicles. We placed them inside the refrigerator. After one day, we checked the popsicles and they turned solid. What do you call the process in changing liquid to solid?

• evaporation

• melting

• freezing

Sometimes a burning candle will have wax dripping down the side. This happens because the heat of the flame...

• turns the wax of the candle to a liquid
• causes water to collect on the candle
• uses some of the gases in the air

Students heated a sample of water in a container. Later, the container appeared to be empty. The heat caused the water to...

• melt
• evaporate
• freeze

Changes in  matter does NOT include...

• melting
• freezing
• vaporization
• creating a mixture 

When you melt a solid, do you add heat or take heat away?

• Add heat
• Take heat away

The picture shows a solid object turns into liquid. The process is called _______________.

• melting

• boiling

• freezing

• subliming

The pictures shows a solid object turns to gas. The process is called _____________.

• freezing

• melting

• evaporating

• subliming