5th grade chemical and physical change

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 shredding paper, melting ice, and dissolving sugar in water.

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 rusting iron, burning wood, and rotting fruit.

Front

Is shredding paper a chemical or physical change?

Back

Shredding paper is a physical change.

Front

What happens to a banana that is rotting?

Back

A rotting banana undergoes a chemical change.

Front

Is lighting a match a physical change?

Back

No, lighting a match is a chemical change.

Front

Is melting butter for popcorn a chemical or physical change?

Back

Melting butter for popcorn is a physical change.

Front

What is an example of a chemical reaction?

Back

An example of a chemical reaction is hydrochloric acid reacting with magnesium to produce hydrogen gas.

Front

What are indicators of a chemical change?

Back

Indicators of a chemical change 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 change the chemical composition of a substance, while a chemical change results in the formation of new substances.

Front

Can a physical change be reversed?

Back

Many physical changes can be reversed, such as freezing and melting water, but chemical changes usually cannot be reversed.