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 or lost electrons in an attempt to become stable called?

Back

An ion.

Front

What do you call atoms that have the same number of protons but different numbers of neutrons?

Back

Isotopes.

Front

What is the term for an atom that has a neutral charge?

Back

Neutral atom.

Front

What distinguishes one element from another at the atomic level?

Back

The number of protons.

Front

What happens to an atom when it loses electrons?

Back

It becomes a positive ion.

Front

What happens to an atom when it gains electrons?

Back

It becomes a negative ion.

Front

What is the charge of a positive ion?

Back

Positive.

Front

What is the charge of a negative ion?

Back

Negative.

Front

What is the mass number of an isotope?

Back

The sum of protons and neutrons.