Counting Elements in Formulas

How many Oxygen atoms are in H₂O?

• 0

• 1

• 2

• 3

How many Hydrogen atoms are in H₂O?

• 0

• 1

• 2

• 3

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

• H₃SO₄
• HSO₄
• H₄S₃O
• H₂O

Tags

NGSS.MS-PS1-1

How many Aluminum atoms are in AlPO₄?

• 1

• 2

• 3

• 4

How many Phosphorous atoms are in AlPO₄?

• 1

• 2

• 3

• 4

How many Oxygen atoms are in AlPO₄?

• 1

• 2

• 3

• 4

How many Carbon atoms are in CO₂?

• 0

• 1

• 2

• 3

How many Oxygen atoms are in CO₂?

• 0

• 1

• 2

• 3

How many Calcium atoms are in CaCO₃?

• 0

• 1

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• 3

How many Carbon atoms are in CaCO₃?

• 0

• 1

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• 3