Elements, Compounds, Mixtures

Front

What is a compound?

Back

A substance made up of two or more chemically combined elements.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically combined.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout, such as air or saltwater.

Front

What is a heterogeneous mixture?

Back

A mixture that does not have a uniform composition, such as salad or Chex mix.

Front

What is the chemical formula for water?

Back

H₂O.

Front

What is the chemical formula for ammonia?

Back

NH₃.

Front

What is the difference between a compound and a mixture?

Back

A compound is formed by chemical bonding of elements, while a mixture is a physical combination of substances.

Front

What is an example of a compound?

Back

Sodium bicarbonate (NaHCO₃).

Front

What is an example of a homogeneous mixture?

Back

Air.