Physical Properties & Density, Chemical Changes

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its chemical identity.

Tags

NGSS.MS-PS1-4

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to undergo a specific chemical change.

Front

What happens to a substance's chemical identity during a physical change?

Back

The chemical identity remains the same; only physical properties may change.

Tags

NGSS.MS-PS1-4

Front

What is density?

Back

Density is the mass of a substance divided by its volume, typically expressed in g/cm³.

Front

How do you calculate density?

Back

Density = Mass / Volume.

Front

What is the density of water?

Back

1 g/cm³ at 4°C.

Front

Why do helium balloons rise in air?

Back

Helium is less dense than air.

Front

What phase of matter has a definite volume but no definite shape?

Back

Liquid.

Front

What is an example of a physical change?

Back

Melting ice into water.

Tags

NGSS.MS-PS1-4

Front

What is an example of a chemical change?

Back

Rusting of iron.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5