Chemistry Test Review

How many atoms of sodium (Na) are in one molecule of baking soda?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

In a chemical reaction, a new substance is not created.

• true

• false

Tags

NGSS.MS-PS1-5

Molecules bonded together make up atoms.

• true

• false

Tags

NGSS.MS-PS1-1

How many atoms make up one molecule of laughing gas?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

In a chemical reaction or change a new substance is not created.

• true

• false

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is NOT a chemical reaction?

• burning a marshmallow in a campfire.
• a campfire
• acid rain turning a copper roof green.
• Dissolving red Koolaid in water.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a chemical reaction?

• Burning bread in the toaster.
• melting wax in a microwave.
• dissolving salt in water
• boiling water to make steam.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the number of protons that the element in this image contain?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

True or False? Neutrons have a negative charge

• True

• False

A _________ is a substance made of two or more DIFFERENT elements chemically combined. 

• mixture
• compound
• substance