Ions

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What happens to an atom when it gains an electron?

Back

It becomes a negatively charged ion (anion).

Front

What happens to an atom when it loses an electron?

Back

It becomes a positively charged ion (cation).

Front

What is the charge of a sodium ion (Na) after losing one electron?

Back

+1

Front

What is the charge of a chlorine ion (Cl) after gaining one electron?

Back

-1

Front

How do you determine the charge of an ion?

Back

The charge of an ion is determined by the difference between the number of protons and electrons.

Front

What is the charge of an oxygen ion (O) after gaining two electrons?

Back

-2

Front

What is the charge of a magnesium ion (Mg) after losing two electrons?

Back

+2

Front

What is the term for a positively charged ion?

Back

Cation.

Front

What is the term for a negatively charged ion?

Back

Anion.