Atoms & Periodic Table Review

Front

What is a molecule?

Back

A molecule is formed when two or more atoms are chemically bonded together.

Front

What is a compound?

Back

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

Front

What does it mean for an atom to be stable?

Back

An atom is stable when its outer electron shell is full.

Front

How many groups are in the Periodic Table?

Back

There are 18 groups in the Periodic Table.

Front

How many periods are in the Periodic Table?

Back

There are 7 periods in the Periodic Table.

Front

Why do atoms form bonds?

Back

Atoms form bonds to fill their outer electron shell and become stable.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the atomic number?

Back

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

Front

What is the significance of the Periodic Table?

Back

The Periodic Table organizes elements based on their atomic number and properties.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.