Physical/Chemical Changes

Front

What is a chemical change?

Back

A process where a new substance is formed, indicating a change in the chemical composition.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What evidence indicates a chemical change has occurred?

Back

The formation of a new substance, gas, or a change in color.

Front

What happens to water when it freezes?

Back

Water changes from a liquid to a solid, which is a physical change.

Front

What happens to water when it boils?

Back

Water changes from a liquid to a gas, which is a physical change.

Front

What is an example of a chemical change?

Back

Mixing vinegar and baking soda to produce carbon dioxide gas.

Front

What is an example of a physical change?

Back

Melting ice into water.

Front

What happens to particles during a physical change?

Back

The arrangement of particles may change, but their chemical structure remains the same.

Front

What happens to particles during a chemical change?

Back

The particles rearrange to form new substances with different properties.

Front

What is the role of heat in physical changes?

Back

Heat can be added or removed to change the state of matter (e.g., melting or freezing).