Counting Atoms

How many total POTASSIUM atoms are in this formula?

• 8

• 2

• 4

• 12

How many atoms of Hydrogen are in H₂O

• 1

• 2

• 3

• more than 3

Tags

NGSS.MS-PS1-1

Calculate the number of Oxygen atoms in Al(OH)₃

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many Magnesium atoms are in 10MgCl₂?

• 10

• 5

• 20

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in H₂SO₄ ?

• 6

• 5

• 7

• 3

Tags

NGSS.MS-PS1-1

How many Sodium atoms are in 6NaCl?

• 1

• 12

• 6

Tags

NGSS.MS-PS1-1

Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)

• H₃SO₄

• HSO₄

• H₄S₃O

• H₂O

Tags

NGSS.MS-PS1-1

What does the subscript in a chemical formula tell you?

• How many molecules are present

• How many atoms are present

• How many elements are present

• How many neutrons are present

How many atoms/ions are in one formula unit of Zn(C₂H₃O₂)₂ ?

Tags

NGSS.MS-PS1-1

How many atoms of Hydrogen are in this compound?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1