Science quiz -compounds and formulae

How many atoms of oxygen are there in water? H₂O

• 1
• 2
• 0

How many atoms of sulphur are in sulphuric acid? H₂SO₄

• 6
• 2
• 4
• 1

What are the different elements in carbon dioxide?

• carbon
• cobalt and oxygen
• oxygen and carbon
• oxide and carbon

How many different elements make up nitric acid? HNO₃

• 1
• 5
• 3

What is the correct chemical formula for water?

• H2O
• HO2
• H₂O
• H²O

How many atoms of hydrogen are in a sugar molecule with the formula C₆H₁₂O₆

• 12

• 6

• 24

• 18

Which of the following is NOT an element?

• H₂O
• H₂
• O₂
• Au

Which elements are in the formula shown above?

• Cobalt only

• Carbon and Oxygen

• Copper only

• Carbon and Osmium

Element or compound?
H₂O

• element
• compound

The yellow elements are called...

• metals

• nonmetals

• metalloids

• noble gases