Molecules and Compounds

Which is a molecule? A, B, or Both?

• A

• B

• Both

Tags

NGSS.MS-PS1-1

The smallest unbreakable unit of a compound is called

• subscript

• proton

• formula

• molecule

Tags

NGSS.MS-PS1-1

Carbon dioxide (CO₂) contains how many atoms of oxygen?

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

What do we call a chemical substance made up of 2 or more different types atoms bonded together?

• formula

• atom

• subscript

• compound

Tags

NGSS.MS-PS1-1

All ____________ are made up of two or more atoms bonded together.

• atoms

• molecules

• electrons

• elements

Tags

NGSS.MS-PS1-1

When __________ form, the elements lose there individual chemical properties and take on new properties.

• compounds

• atoms

• subscript

• formula

Tags

NGSS.MS-PS1-2

A recipe for a chemical substance is called a ________ _________.

• coefficent

• chemical formula

• Oxygen

• atom

H₂O₂← ?
This number tells the number of atoms present.

• coefficient

• molecule

• subscript

• atom

Tags

NGSS.MS-PS1-1

H₂O
This number tells how many molecules are in a chemical equation.

• coefficient

• subscript

• compound

• element

2H₂O
How many Hydrogen atoms are present?

• 2

• 4

• 1

• 10

Tags

NGSS.MS-PS1-1