Counting Atoms (Chemical Formulas)

How many hydrogen atoms are there?

• 1

• 4

• 5

• 6

Tags

NGSS.MS-PS1-1

How many nitrogen atoms are there?

• 4

• 8

• 10

• 20

Tags

NGSS.MS-PS1-1

How many phosphorus atoms are there?

• 0

• 1

• 3

• 4

Tags

NGSS.MS-PS1-1

How many molecules of methane are there?

• 0

• 1

• 2

• 4

Tags

NGSS.MS-PS1-1

How many total atoms are there?

• 0

• 1

• 4

• 6

Tags

NGSS.MS-PS1-1

How many atoms of hydrogen are there?

• 2

• 4

• 6

• 11

Tags

NGSS.MS-PS1-1

How many different kinds of elements are there?

• 4

• 3

• 2

• 1

Tags

NGSS.MS-PS1-1

How many molecules of caffeine are there?

• 2

• 5

• 10

• 24

Tags

NGSS.MS-PS1-1

How many carbon atoms are there?

• 2

• 3

• 8

• 16

Tags

NGSS.MS-PS1-1

This appears on the left side of a chemical formula, and represents how many molecules there are.

• an atom
• the subscript
• a molecule
• the coefficient

Tags

NGSS.MS-PS1-1