Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include changes in size, shape, or state of matter.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It often involves a reaction that produces light, heat, or gas.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

Is breaking glass a physical or chemical change?

Back

Breaking glass is a physical change.

Front

Is burning wood a physical or chemical change?

Back

Burning wood is a chemical change.

Front

What happens during condensation?

Back

During condensation, water vapor cools and changes from a gas to a liquid, forming droplets on surfaces like a glass.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice into water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not create a new substance, while a chemical change does.

Front

What is an example of a change that releases heat?

Back

An example of a change that releases heat is combustion, such as burning wood.