Chemistry Unit 1 definitions

Isotopes

Atomic / Proton number

Mass / Neucleon number

Ion

Relative isotopic mass

Relative atomic mass (Ar)

Relative molecular mass (Mr)

Relative formula mass

A mole

Molar mass (M)

Empirical formula

A molecule

Molecular formula

Molar volume

Concentration

Standard solution

Species

Stoichiometry

Acid
Plus 3 to know

Base
Plus some examples

Alkali
Plus 3 to know

Salt

Cation

Anion

Water of crystallisation

Hydrated

Anhydrous

Oxidation number

Oxidation

Redox

Redox reaction

Reducing agent

Oxidising agent

First ionisation energy

Electron shielding

Successive ionisation energies

Shell

Principle quantum number

Atomic orbital

Sub-shell

Electron configuration

Compound

Ionic bond

Giant ionic lattice

Group

Covalent bond

Lone pair

Dative covenant / coordinate bond

Electronegativity

Permanent dipole

Polar covalent bond

Intermolecular force

Permanent dipole-diple force

van der Waals' forces

Hydrogen bonding

Metallic bonding

Delocalised electrons

Giant metallic lattice

Simple molecular lattice

Giant covalent lattice

Period

Periodicity

Thermal decomposition

Displacement reaction

Disproportionation

Precipitation reaction