Physical and Chemical Changes Flashcard

Front

A change in traits- such as color, size, and shape- that DOES NOT change what the substance is made of is a _________________ change.

Back

Physical

Front

The process where a substance changes into a new substance is called a _____________ change.

Back

Chemical

Front

What is the main difference between physical and chemical changes?

Back

Physical changes do not alter the substance's chemical composition, while chemical changes do.

Front

Give an example of a physical change.

Back

Melting ice is a physical change.

Front

Give an example of a chemical change.

Back

Burning wood is a chemical change.

Front

What happens to the molecules during a physical change?

Back

The molecules rearrange but do not change their chemical structure.

Front

What happens to the molecules during a chemical change?

Back

The molecules break apart and form new substances with different properties.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Physical change.

Front

Is rusting of iron a physical or chemical change?

Back

Chemical change.

Front

What is a common indicator of a chemical change?

Back

Color change, gas production, or temperature change.