Formula Mass Practice

What group is Na in?

• 1

• 2

• 3

• 6

• 7

What group is Al in?

• 1

• 2

• 3

• 6

• 7

In which group do atoms form ions with a 2- charge?

• 1

• 2

• 3

• 6

• 7

In which group do atoms form ions with a 3+ charge?

• 1

• 2

• 3

• 6

• 7

What is the Relative atomic mass of Nitrogen (N)

• 7

• 14

• 3

• 4

What is the relative formula mass (M_r) of Water H₂O?

H = 1

O = 16

What is the relative formula mass (M_r) of Ammonia NH₃?

H = 1

N = 14

What is the relative formula mass (M_r) of Carbon Dioxide CO₂?

C = 12

O = 16

Find the relative formula mass of Calcium Sulfate CaSO₄

Ca = 40

S = 32

O = 16