Exploring States and Changes of Matter

What is the process called when a solid turns into a liquid?

• Melting

• Freezing

• Sublimation

• Condensation

Which of the following is a chemical change?

• Ice melting into water

• Sugar dissolving in water

• Rust forming on iron

• Boiling water to steam

What happens to the molecules during condensation?

• Molecules lose energy and come closer together, forming a liquid.

• Molecules absorb heat and become a plasma.

• Molecules remain unchanged and stay in a solid state.

• Molecules gain energy and spread apart, forming a gas.

Which phase change occurs when a gas turns into a solid?

• Condensation

• Evaporation

• Deposition

• Sublimation

What is an example of a physical change?

• Dissolving sugar in water

• Melting ice into water

• Freezing water into ice

• Burning wood to ash

Which of the following is NOT a phase change?

• Freezing

• Evaporation

• Condensation

• Mixing

What is the term for the change from liquid to gas?

• Sublimation

• Condensation

• Vaporization

• Freezing

Which of the following describes a chemical change?

• Dissolving sugar in water

• Boiling water

• Rusting of iron

• Melting of ice

What occurs during the process of freezing?

• Freezing is when a solid turns into a gas.

• Freezing is the process of a solid melting into a liquid.

• Freezing occurs when a liquid absorbs heat.

• Freezing is the process where a liquid turns into a solid as it loses heat.

What is sublimation?

• Sublimation is the process of a gas turning into a solid.

• Sublimation is the transition of a substance from solid to gas without becoming liquid.

• Sublimation is the evaporation of a liquid into a gas.

• Sublimation refers to the melting of a solid into a liquid.