DOL. U.3.2. Ions & Isotopes

Front

What is an atom that has lost electrons called?

Back

A positive ion.

Front

What is an atom that has gained electrons called?

Back

A negative ion.

Front

If an atom has 9 protons and 10 electrons, what is its charge?

Back

-1 (negative charge).

Front

What is the term for an atom with the same number of protons but different numbers of neutrons?

Back

Isotope.

Front

What is a neutral atom?

Back

An atom with an equal number of protons and electrons.

Front

What happens to the charge of an atom when it loses electrons?

Back

It becomes a positive ion.

Front

What happens to the charge of an atom when it gains electrons?

Back

It becomes a negative ion.

Front

What is the charge of a neutral atom?

Back

0 (neutral charge).

Front

How do you determine the charge of an ion?

Back

By comparing the number of protons and electrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.