5.3 Atomic Structure

Question 1

Electrostatics

Answer 1

Physics that deal with phenomena due to attractions or repulsions of electric charges but not dependent upon their motion

Question 2

Atomic Number

Answer 2

(Z) is equal to the number of protons in the nucleus of an atom

Question 3

Mass Number

Answer 3

(A) the total number of protons and neutrons in the nucleus of an atom

Question 4

Atomic Mass

Answer 4

The weighted average of the masses of the naturally occurring isotopes of an element

Question 5

Atomic Mass Unit (amu)

Answer 5

Used to express atomic and molecular masses, it is the approximate mass of a hydrogen atom, a proton, or a neutron, and is one-twelfth of the mass of an unbound carbon-12 atom at rest. It is equivalent to the dalton.

Question 6

Isotopes

Answer 6

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

Question 7

Neutron

Answer 7

A subatomic nuclear particle with no charge

Question 8

Strong nuclear force

Answer 8

The strong interaction that is responsible for binding the protons and neutrons in the atomic nuclei together