Atoms, Elements & Compounds TEST REVIEW

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It is made up of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together. For example, carbon dioxide (CO2) is a compound made of carbon and oxygen.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of all known elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

Where are protons and neutrons located in an atom?

Back

Protons and neutrons are located in the nucleus of an atom.

Front

What charge do protons have?

Back

Protons have a positive charge.

Front

What charge do electrons have?

Back

Electrons have a negative charge.

Front

What charge do neutrons have?

Back

Neutrons have no charge; they are neutral.

Front

How many protons does oxygen have?

Back

Oxygen has 8 protons.

Front

What is the atomic number of an element?

Back

The atomic number of an element is the number of protons in the nucleus of an atom of that element.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Each substance retains its own properties.