Definitions

Question 1

Atomic Number:

Answer 1

The number of protons in an atom’s nucleus

Question 2

Mass Number:

Answer 2

Number of protons plus number of neutrons in an atoms nucleus

Question 3

Relative Atomic Mass

Answer 3

The weighted mean mass of an atom of an element relative to 1/12th of an atom of carbon-12.

Question 4

Relative Isotopic Mass

Answer 4

The mass of an atom of a specific isotope relative to 1/12th of an atom of carbon-12.

Question 5

Concentration

Answer 5

How much solute is dissolved for every 1dm^3 of solvent.

Question 6

Empirical Formula

Answer 6

The simplest whole number ratio of atoms of each element in a compound.

Question 7

Isotopes

Answer 7

Atoms of an element with the same number of PROTONS but different number of NEUTRONS as each other.

Question 8

Water Of Crystallisation

Answer 8

Water molecules that are bonded into the lattice structure of a salt.

Question 9

Molar Mass

Answer 9

The mass of 1 mole of a substance in units of g/mol.

Question 10

Oxidation in terms of oxidation number

Answer 10

Oxidation is an increase in oxidation number.