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. Examples include changes in size, shape, or state of matter.

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 the rearrangement of atoms. Examples include rusting, baking, and combustion.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Does a physical change alter the chemical composition of a substance?

Back

No, a physical change does not alter the chemical composition of a substance.

Tags

NGSS.MS-PS1-4

Front

What happens to matter during a physical change?

Back

Matter begins and ends as the same substance during a physical change.

Tags

NGSS.MS-PS1-4

Front

Is melting butter for popcorn a physical or chemical change?

Back

Melting butter for popcorn is a physical change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is an example of a chemical reaction?

Back

Cookies baking in an oven is an example of a chemical reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Front

Which of the following is NOT a physical change: crumpled paper, pencil sharpening, shrunken clothing, or rust?

Back

Rust is NOT a physical change; it is a chemical change.

Tags

NGSS.MS-PS1-2

Front

What is an example of a physical change?

Back

Examples of physical changes include breaking glass, melting ice, and dissolving sugar in water.

Front

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

Back

A physical change affects physical properties without changing the substance's identity, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-4

Front

Can a physical change be reversed?

Back

Many physical changes can be reversed, such as freezing and melting water.

Tags

NGSS.MS-PS1-4