Atomic Structure

Question 1

Law of the conservation of mass

Answer 1

Matter is neither created nor destroyed in the course of a chemical reaction

Question 2

Atomic number

Answer 2

The number of protons in the nucleus of that atom

Question 3

Mass number

Answer 3

The sum of the numbers of protons and neutrons in the nucleus of the atom

Question 4

Isotopes

Answer 4

Atoms with the same number of protons but different numbers of neutrons

Question 5

Relative atomic mass

Answer 5

The average mass of an atom of an element relative to 1/12 the mass of an atom of carbon-12