Valency and Molecular Formula

What is the chemical formula of Magnesium chloride?

• MgCl

• MgCl₂

• MgC

• MgC_2

Tags

NGSS.MS-PS1-1

What is the chemical formula of sodium sulfate?

• SSO₄

• SoSO₄

• NaSO₄

• Na₂SO₄

What is the formula of Copper (II) oxide?

• CUO

• CuO

• CuO₂

• Cu₂O

Tags

NGSS.MS-PS1-1

What is the formula of nitric acid?

• H₂SO₄

• HNO₃

• HCl

• hno₃

How many atoms are there in the compound MgCO₃?

• 3

• 4

• 5

• 6

Tags

NGSS.MS-PS1-1

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Element or compound?
H₂O

• element
• compound

Tags

NGSS.MS-PS1-1

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

• H₃SO₄
• HSO₄
• H₄S₃O
• H₂O

Tags

NGSS.MS-PS1-1

Which is the correct formula for:
one carbon (C)
two oxygen (O)

• CO₂
• CO
• C₂O
• 2CO

Tags

NGSS.MS-PS1-1

Black = Carbon (C)
White = Hydrogen (H)
What would be the formula for ethane?

• CH₄
• CH₆
• C₂H₂
• C₂H₆

Tags

NGSS.MS-PS1-1