Ions and Isotopes Review 3rd

Front

What charge does aluminum have when it loses 3 electrons?

Back

+3

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is an ion?

Back

An atom that has gained or lost electrons.

Front

How many electrons does a magnesium ion with a +2 charge have?

Back

10

Front

What is a neutral atom?

Back

An atom with an equal number of protons and electrons.

Front

What happens to an atom when it becomes a positive ion?

Back

It loses one or more electrons.

Front

What happens to an atom when it becomes a negative ion?

Back

It gains one or more electrons.

Front

How do isotopes of an element differ?

Back

They have different numbers of neutrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.