Front

What is an isotope?

Back

An atom with different amounts of neutrons.

Front

What is an ion?

Back

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Front

What is a cation?

Back

An atom with more of a positive charge.

Front

What is an anion?

Back

An atom with more of a negative charge.

Front

How many valence electrons does sulfur (S) have?

Back

6 valence electrons.

Front

What charge will sulfur (S) have when it forms an ion?

Back

-2.

Front

How many valence electrons does calcium (Ca) have?

Back

2 valence electrons.

Front

What charge will calcium (Ca) have when it forms an ion?

Back

+2.

Front

What is the difference between isotopes of the same element?

Back

Isotopes have the same number of protons but different numbers of neutrons.

Front

What is the mass number of an isotope?

Back

The total number of protons and neutrons in the nucleus.