Counting Atoms: Subscripts

How many atoms of Hydrogen are in H₂O

• 1

• 2

• 3

• more than 3

How many different elements are present in H₂COCH₂

• 5

• 4

• 3

• 2

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

• 1

• 2

• 3

• 4

The ______ are numbers found on the lower right-hand side of an element symbol.

• Coefficient

• Exponent

• Multiplier

• Subscript

C₃H₅(NO₃)₃

• C = 3, H = 5, N = 3, O = 9

• C = 3, H = 5, N = 1, O = 9

• C = 9, H = 15, N = 3, O = 9

• C = 9, H = 15, N = 1, O = 3

H₂SO₄

• H = 2, S = 4, O = 4

• H = 2, S = 1, O = 4

• H = 8, S = 4, O = 4

• H = 2, SO = 4

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Element or compound?
O₂

• Element
• Compound

Which of the following is a compound?

• Co
• O₂
• C
• CO₂

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

• H₃SO₄
• HSO₄
• H₄S₃O
• H₂O