Big Idea 9 - Changes in Matter

A physical change is a change in size, shape, or state of matter without altering its chemical composition.

A chemical change is a change that results in the formation of new substances with different properties.

During a physical change, the form of matter may change, but its identity remains the same.

Melting ice is an example of a physical change.

Burning wood is an example of a chemical change.

Evaporation is the process where a liquid turns into a gas, which is a physical change.

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture.

Physical changes do not create new substances, while chemical changes do.

Indicators of a chemical change include color change, gas production, and temperature change.

Matter is rearranged to form new substances during a chemical change.