Module 5 - lesson 1 - Mastery Check (must do)

What is the chemical formula of sodium sulfate?

• SSO₄

• SoSO₄

• NaSO₄

• Na₂SO₄

What is the formula of Copper (II) oxide?

• CUO

• CuO

• CuO₂

• Cu₂O

How many atoms are there in the compound MgCO₃?

• 3

• 4

• 5

• 6

The formula of sodium carbonate is

• NaCO₃

• Na(CO₃)₂

• Na₂CO₃

• SCO₃

The formula of iron(II) hydroxide is

• FeOH₂

• FeOH

• Fe(OH)₂

• Fe(OH)₃

The formula of ammonium ion is

• NH₃

• NH₃⁺

• NH₄

• NH₄⁺

How many atoms of sulfur are in each molecule of H₂SO₄?

• 1

• 4

• 2

• 7

Alanine is an amino acid with formula C₃H₇NO_2. How many atoms in all are in each molecule of alanine?

• 3

• 7

• 12

• 13

Which of the following statements accurately describes the number of atoms in a molecule of ammonia - NH₃?

• Three atoms of nitrogen and three atoms of hydrogen

• One atom of nitrogen and three atoms of hydrogen

• Three atoms of nitrogen and one atom of hydrogen

• One atom of nitrogen and one atom of hydrogen

Which of the following accurately describes the molecular formula of the molecule shown above?

• 3CH₈O

• C₃H₇O

• C₄H₈O₂

• C₃H₈O