Atomic Theory Review

Front

Cations are...

Back

Positive ions that form when an atom loses one or more valence electrons.

Front

Positive ions form when atoms _________ valence electrons.

Back

lose

Front

What is the number of neutrons in an atom with 7 protons and an atomic mass of 14?

Back

7 neutrons.

Front

If an atom has an expected atomic mass of 14, and it has 7 protons and 8 neutrons it is a ____________.

Back

Isotope.

Front

What charge does an atom have if it LOSES an electron?

Back

Positive (+).

Front

What are anions?

Back

Negative ions that form when an atom gains one or more valence electrons.

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 isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the role of valence electrons in chemical bonding?

Back

Valence electrons are involved in forming bonds between atoms.