Understanding Physical and Chemical Changes

Particles are very close together in a fixed, organized pattern. Particles cannot move but can vibrate.

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Tags

NGSS.MS-PS1-1

Particles are close together in an irregular arrangement. The particles can slide past each other.

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Particles are far apart from each other and in an irregular arrangement. They are moving constantly in all directions.

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NGSS.MS-PS3-2

When heat is decreased or taken away, the particles of matter ______________________________.

• slow down and move closer together

• speed up and spread out

Tags

NGSS.MS-PS1-4

When heat is increased, the particles of matter________________________

• speed up and spread out

• slow down and move closer together

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Takes place when a substance changes form and can often be reversed.

• Physical change

• Chemical change

When there is a change in matter that causes a new substance to be formed.

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What is a physical change?

• A change that forms a new substance

• A change in which no new substance is formed

• A change that cannot be reversed

Which of the following is an example of a chemical change?

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Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which of the following best describes a physical change?

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Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4