Kids Science: Molecules Quiz

What is a molecule?

• Two atoms joined together

• A chemical reaction

• A single atom

• A type of element

What is a compound?

• A single atom

• A molecule made of the same type of atoms

• A type of chemical bond

• A molecule made of different types of elements

What is the molecular formula for water?

• C6H12O6

• CO2

• H2O

• NH3

How many hydrogen atoms are in a water molecule?

• 4

• 2

• 3

• 1

What type of bond shares electrons between atoms?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

What is the molecular formula for glucose?

• C6H12O6

• NH3

• CO2

• H2O

What percentage of the human body mass is made up of oxygen atoms?

• 33%

• 50%

• 66%

• 75%

What is the molecule O3 commonly known as?

• Carbon dioxide

• Water

• Ozone

• Oxygen

What type of compounds contain carbon?

• Organic compounds

• Inorganic compounds

• Ionic compounds

• Metallic compounds

What is a perfect diamond made of?

• Oxygen atoms

• Carbon atoms

• Hydrogen atoms

• Nitrogen atoms