Front

Molecules of pure elements contain only one type of ______.

Back

Atom

Front

What is the smallest unit of a substance that has all the properties of that substance?

Back

Molecule

Front

What type of bonds hold the atoms in a molecule together?

Back

Strong chemical bonds

Front

A molecule of oxygen gas consists of two ______ atoms.

Back

Oxygen

Front

What are the particles called that share to form bonds in a molecule?

Back

Electrons

Front

What is a molecule?

Back

A molecule is the smallest unit of a substance that retains all the properties of that substance.

Front

What is an atom?

Back

An atom is the basic unit of a chemical element.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What are covalent bonds?

Back

Covalent bonds are strong chemical bonds formed when atoms share electrons.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms.