6th Grade Science Review

Front

What is density?

Back

Density is the mass of an object divided by its volume. It determines whether an object will float or sink in a fluid.

Front

Why does sand sink in water?

Back

Sand sinks in water because it is more dense than water.

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.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Give an example of a physical change.

Back

Slicing bread is an example of a physical change.

Front

Give an example of a chemical change.

Back

Rust forming on iron is an example of a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What happens to the substances in a chemical change?

Back

In a chemical change, a new substance is formed and the original substances are transformed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

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

Back

In a physical change, no new substance is formed, while in a chemical change, a new substance is formed.

Tags

NGSS.MS-PS1-2

Front

What is boiling water an example of?

Back

Boiling water is an example of a physical change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What happens to the molecules during a physical change?

Back

During a physical change, the molecules may change their arrangement but their chemical structure remains the same.