Elements, Compounds, Mixtures Review

Front

What is a pure substance?

Back

Matter that always has exactly the same composition.

Front

What is a mixture?

Back

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

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is an element?

Back

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

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What does the coefficient in a chemical formula represent?

Back

The number of molecules of a substance in a chemical equation.

Front

What is the chemical formula for glucose?

Back

C6H12O6.

Front

How many atoms of Carbon are in the formula H3C5O4?

Back

5.

Front

What is the difference between a solution and a mixture?

Back

A solution is a homogeneous mixture where substances are evenly distributed, while a mixture can be heterogeneous.

Front

What is the definition of a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.