Chemistry Leaving Cert Definitions

Dalton's Atomic Theory

Cathode Rays

An Orbital

An Element

A Triad

Newlands' Octaves

Mendeleev's Periodic Law

Atomic Number

Modern Period Table

Modern Periodic Law

The Mass Number of an Element

Isotopes

Relative Atomic Mass

The Aufbau Principle

Hund's Rule of Maximum Multiplicity

The Pauli Exclusion Principle

A Compund

The Octet Rule

An Ion

An Ionic Bond

A Transition Metal

A Molecule

The Valency of an Element

Electronegativity

Van der Waals Forces

Dipole-Dipole Forces

Hydrogen Bonds

The Law of Conservation of Mass

The Law of Conservation of Matter

The Atomic/Covalent Radius of an Atom

Radioactivity

The Half-Life of an Element

One Mole of a Substance

Mass of One Mole of an Element

The Relative Molecular Mass of a Compound

A Gas

Boyle's Law

Charles' Law

Gay-Lussac's Law of Combining Volumes

Avogadro's Law

Molar Volume

Kinetic Theory of Gases

An Ideal Gas

Real Gases differ from Ideal Gases because..

The Empirical Formula of a compound

Molecular Formula

Arrhenius' definition of an Acid

Arrhenius' definition of a Base

Brønsted–Lowry definition of an Acid

Brønsted–Lowry definition of a Base

Acid to Conjugate Base

Base to Conjugate Acid

A Conjugate Acid-Base Pair

Neutralisation

The Concentration of a Solution

A 1 Molar Solution

A Primary Standard

A Titration

Oxidation of an Element

Reduction of an Element

An Oxidising Agent

A Reducing Agent

Oxidation Number

The Rate of Reaction

A Catalyst