Chemical Formulas & Counting Atoms Quiz

What does a chemical formula represent?

• A molecule

• A reaction

• A solution

• A mixture

Tags

NGSS.MS-PS1-1

In the formula Fe₃(PO₄)₂, how many phosphorus atoms are present?

• 2

• 3

• 4

• 6

Tags

NGSS.MS-PS1-1

What is always true about the first letter of a chemical symbol?

• It is always lowercase

• It is always uppercase

• It is always a number

• It is always a vowel

Which of the following is an example of a chemical symbol?

• H2O

• Na

• (NO3)2

• 4CO2

How many lithium (Li) atoms are present in the compound Li₂SO₄?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many phosphorus (P) atoms are present in Fe₃(PO₄)₂?

• 2

• 3

• 4

• 6

Tags

NGSS.MS-PS1-1

How many hydrogen (H) atoms are present in (NH₄)₃PO₄?

• 3

• 4

• 9

• 12

Tags

NGSS.MS-PS1-1

How many lithium (Li) atoms are present in one formula unit of Li₂SO₄?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many barium (Ba) atoms are present in 3BaCl₂?

• 1

• 2

• 3

• 6

Tags

NGSS.MS-PS1-1

How many carbon (C) atoms are present in CH₃CO₂?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1