Physical or 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 melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and changes the chemical composition of the substance. Examples include burning, rusting, and cooking.

Front

Is sour milk a chemical or physical change?

Back

Chemical change.

Front

Is pouring milk in your oatmeal a physical or chemical change?

Back

Physical change.

Front

What happens during a physical change?

Back

During a physical change, the form of a substance changes, but its chemical identity remains the same.

Front

What happens during a chemical change?

Back

During a chemical change, the substances involved undergo a transformation that alters their chemical structure, resulting in new substances.

Front

Is ice melting a physical or chemical change?

Back

Physical change.

Front

Is frying an egg a physical or chemical change?

Back

Chemical change.

Front

Is roasting a marshmallow a physical or chemical change?

Back

Chemical change.

Front

What are some indicators of a chemical change?

Back

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