Front

Absorption of energy by an electron results in:

Back

It moving from the ground to an excited state.

Front

What charge does a neutron have?

Back

No charge.

Front

Anions are:

Back

Negative.

Front

The number of neutrons equals:

Back

Mass number - atomic number.

Front

How many valence electrons should Oxygen have in its Lewis dot model?

Back

6.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number?

Back

The total number of protons and neutrons in an atom's nucleus.

Front

What is an ion?

Back

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

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions, while anions are negatively charged ions.

Front

What is the significance of valence electrons?

Back

Valence electrons determine an atom's chemical properties and its ability to bond with other atoms.