Chemical and Physical 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 breaking.

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 baking.

Front

Is melting ice a chemical or physical change?

Back

Physical Change

Front

Is mixing sand and salt a chemical or physical change?

Back

Physical Change

Front

What happens during a chemical change?

Back

During a chemical change, the atoms in the reactants rearrange to form new substances with different properties.

Front

Is dissolving sugar in water a chemical or physical change?

Back

Physical Change

Front

What is an example of a chemical change in cooking?

Back

Baking a cake is an example of a chemical change because the ingredients undergo a chemical reaction to form a new product.

Front

Is rusting of iron a chemical or physical change?

Back

Chemical Change

Front

What is an indicator of a chemical change?

Back

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

Front

Is chopping vegetables a chemical or physical change?

Back

Physical Change