Exploring Changes in Matter

What are the three main states of matter?

• solid, liquid, gas

• plasma, vapor, foam

• gas, liquid, crystal

• solid, liquid, plasma

What happens to water when it freezes?

• Water expands and forms ice when it freezes.

• Water turns into steam when it freezes.

• Water evaporates completely when it freezes.

• Water contracts and becomes denser when it freezes.

Can you name a solid, a liquid, and a gas?

• Solid: Ice, Liquid: Water, Gas: Steam

• Solid: Rock, Liquid: Oil, Gas: Smoke

• Solid: Sand, Liquid: Juice, Gas: Vapor

• Solid: Water, Liquid: Ice, Gas: Air

What is it called when a solid turns into a liquid?

• Condensation

• Freezing

• Melting

• Sublimation

Describe what happens during evaporation.

• Evaporation is the process of solid turning directly into gas.

• Evaporation occurs only at freezing temperatures.

• Evaporation is the process where liquid molecules gain energy and change into vapor.

• Evaporation is when vapor condenses into a liquid.

What state of matter is steam?

• Gas

• Liquid

• Plasma

• Solid

How does melting occur?

• Melting is the process of a solid being compressed into a smaller volume.

• Melting occurs when a solid absorbs heat and transitions into a liquid.

• Melting happens when a gas condenses into a liquid.

• Melting occurs when a liquid cools and becomes solid.

What is condensation?

• Condensation is the freezing of water into ice.

• Condensation is the process of water vapor turning into liquid water.

• Condensation is the process of liquid water turning into water vapor.

• Condensation is the evaporation of water from a surface.

Illustrate the transformation of ice to water.

• Ice transforms to water through melting when heated to 0 degrees Celsius.

• Ice turns to steam when heated to 100 degrees Celsius.

• Ice becomes water through freezing at 0 degrees Celsius.

• Ice transforms to water by sublimation at room temperature.

What change occurs when water boils?

• Water changes color when heated.

• Water turns into steam without boiling.

• Water changes from liquid to gas.

• Water freezes into ice.