I am a molecule made of two of the same atoms and have the formula O₂. My name is

• carbon dioxide

• ozone

• oxygen gas

• water

I am a molecule made of two of the same atoms and have the formula N₂. My name is

• air

• ozone

• oxygen gas

• nitrogen gas

I am a molecule made of two of the same atoms and have the formula H₂. My name is

• water

• hydrogen gas

• oxygen gas

• nitrogen gas

I am a molecule made of two of the different atoms and have the formula H₂O. My name is

• water

• hydrogen gas

• oxygen gas

• nitrogen gas

I am a molecule made of two of the different atoms and have the formula CO. My name is

• water

• carbon dioxide gas

• oxygen gas

• carbon monoxide gas

I am a molecule made of two of the different atoms and have the formula CO₂. My name is

• water

• carbon dioxide gas

• oxygen gas

• carbon monoxide gas

I am a sweet molecule made of two of the different atoms and have the formula C₆H₁₂O₆. My name is

• DNA

• glucose

• ammonia

• salt

I am a molecule made of two of the different atoms and have the formula NaCl. My name is

• DNA

• glucose

• ammonia

• salt

What are the basic building blocks that all matter is made of?

• atoms

• elements

• compounds

• chemicals

What do we call a substance consisting of a single atom?

• coefficient
• element
• compound
• molecule