Counting Atoms in Chemical Formulas Practice

The number of Sodium (Na) atoms in Na₂CO₃

• 1

• 2

• 3

• 6

Tags

NGSS.MS-PS1-1

How many elements are in the compound C₂H₈O ?

• 2

• 1

• 3

• 0

Tags

NGSS.MS-PS1-1

How many total atoms are in the compound C₂H₈O ?

• 11

• 2

• 8

• 1

Tags

NGSS.MS-PS1-1

How many Sodium (Na) are in 6NaCl?

• 1
• 12
• 6

How many TOTAL atoms are in this compound?
H₂C₃O₄N₅

• 5
• 14
• 15
• 19

Tags

NGSS.MS-PS1-1

How many Hydrogen are in 4H₂O?

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

2H₂ + O₂ ----> 2H₂O What is the product?

• ------>
• 2H₂O
• 2H₂+ O₂

Tags

NGSS.MS-PS1-5

2H₂ + O₂ --------> 2H₂O What  are the reactants?

• ----->
• 2H₂O
• 2H₂ +O₂

Tags

NGSS.MS-PS1-1

How many Oxygen (O) atoms are in Al₂(SO₄)₃

• 4

• 12

• 7

• 24

Tags

NGSS.MS-PS1-1

How many carbon atoms are in 2Na₂CO₃?

• 1

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1