Physical and 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.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, involving a rearrangement of atoms.

Front

Give an example of a physical change.

Back

Ripping up paper is an example of a physical change.

Front

What state of matter has particles that are tightly packed?

Back

Solid.

Front

What happens to iron when it rusts?

Back

It undergoes a chemical reaction that changes it from shiny to rusty.

Front

What is an example of a chemical change?

Back

A candle burning is an example of a chemical change.

Front

What are the indicators of a chemical change?

Back

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

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change does.

Front

What is the process of rusting?

Back

Rusting is a chemical reaction between iron, oxygen, and moisture that produces iron oxide.

Front

What is an example of a physical change in the kitchen?

Back

Chopping vegetables is an example of a physical change.