Element or Compound

Front

What is an Element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen (H) and oxygen (O).

Front

What is a Compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).

Front

Is CO an Element or a Compound?

Back

CO is a Compound.

Front

Is H2 an Element or a Compound?

Back

H2 is an Element.

Front

Is Cl2 an Element or a Compound?

Back

Cl2 is an Element.

Front

Is CO2 an Element or a Compound?

Back

CO2 is a Compound.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.

Front

What is the chemical formula for carbon dioxide?

Back

The chemical formula for carbon dioxide is CO2.

Front

Can elements exist in different forms?

Back

Yes, elements can exist in different forms called allotropes. For example, carbon can exist as graphite or diamond.

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties. It is made up of two or more atoms bonded together.