Changes in 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

Removing heat from water vapor causes what change in it's physical state?

• a liquid changing into a gas
• a solid changing into a gas
• a gas changing into a liquid
• a liquid changing into a solid

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

• melt
• freeze
• evaporate
• gel

When an ice cube is placed on the sidewalk on a hot day, what is the series of changes to it's physical state that occurs?

• gas, solid, liquid
• solid, gas, liquid
• solid, liquid, gas
• liquid, solid, gas

Water vapor is forming a liquid on the outside of this glass because the vapor.

• loses heat when it touches the glass
• pulls cooler liquid through the glass
• becomes warmer close to the glass

After a rainstorm a group of students notices puddles on the sidewalk. Later that afternoon the students observed a change in the puddles. What caused the water in the puddle to disappear?

• shadows covered the sidewalk
• the Sun's heat evaporated the water
• the rainstorms continued all day

Students created a model of the water cycle by heating a beaker of water on a hot plate until it boiled. They carefully held a metal pan of ice cubes where water vapor was rising from the beaker and water drops began to form on the bottom of the metal pan. The water drops formed on the bottom of the pan because...

• the pan was made of metal
• the water vapor cooled
• the ice was a solid

If a box of wax crayons was left in a hot car all of the following could happen EXCEPT?

• the crayons could change shape
• the colors could mix together
• the paper wrappers could melt

A glass of water was left outside on the coldest day of the year. The low temperature could make what change in the water? The water could...

• change color
• get a salty taste
• turn into ice