Physical and Chemical Changes

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties and can be separated by physical means.

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.

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into new substances with different properties.

Front

Can the components of a mixture be separated?

Back

Yes, the components of a mixture can be separated by physical means.

Front

What is an example of a physical change?

Back

Examples of physical changes include crumpling paper, sharpening a pencil, and freezing water.

Front

What is an example of a chemical change?

Back

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

Front

What happens to the properties of substances in a chemical change?

Back

In a chemical change, the properties of the original substances change as new substances are formed.

Front

Is rusting a physical or chemical change?

Back

Rusting is a chemical change.

Front

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

Back

A physical change does not create new substances, while a chemical change results in the formation of new substances.

Front

What happens to the mass of substances during a chemical change?

Back

The mass of the substances is conserved during a chemical change; it remains the same before and after the change.