7th Grade Chemistry Unit Review

How many molecules are in this chemical formula?

• 2

• 3

• 8

• 12

Tags

NGSS.MS-PS1-1

How many elements are in this molecule of oxalic acid?

• 2

• 3

• 8

• 10

Tags

NGSS.MS-PS1-1

How many atoms are in this molecule of oxalic acid?

• 2

• 3

• 6

• 8

Tags

NGSS.MS-PS1-1

Dissolving sugar in a glass of tea

• Physical change

• Chemical change

• Neither

Tags

NGSS.MS-PS1-4

Burning a marshmallow in a campfire

• Physical change

• Chemical change

• Neither

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Food spoiling

• Physical change

• Chemical change

• neither

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

Tearing paper into smaller pieces

• Physical change

• Chemical change

• Neither

A piece of chain rusting

• Physical change

• Chemical change

• Neither

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Melting ice

• Physical change

• Chemical change

• Neither

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Ability to tarnish

• Physical property

• Chemical property

• Neither

Tags

NGSS.MS-PS1-2