What this topic covers
Physical chemistry has 7 subtopics, including:
- Atomic structure
- Amount of substance
- Bonding
- Energetics
- Kinetics
- Chemical equilibria, Le Chatelier’s principle and Kc
AS Level AQA Chemistry · Topic 1 of 3
Choose a subtopic. Physical chemistry covers Atomic structure, Amount of substance, Bonding, and Energetics in AS Level AQA Chemistry. 41 lessons in 7 subtopics.
Revise Physical chemistry for AS Level AQA Chemistry, including Atomic structure, Amount of substance, Bonding, and Energetics. 41 lessons across 7 subtopics.
41
Lessons
7
Subtopics
Physical chemistry has 7 subtopics, including:
41 lessons, grouped by subtopic.
AQA AS Chemistry mock draft, 26–31 Oct. Draft coverage: Chemistry AS Paper 1. Reviewed for an original-practice sitting; check student availability before registering. Marking and results will follow later, after separate approval. Eligible new accounts receive a five-day Pro trial when signup email verification completes. Previous trials keep their original expiry. After expiry, new papers need Pro unless you have an explicitly confirmed free sitting offer for this event. That offer adds no Pro time or AI learning. Saved attempts and released results remain readable. No card or automatic charge.
Go back to the full AS Level AQA Chemistry topic list, or practise this topic with past-paper questions.
Physical chemistry covers Atomic structure, Amount of substance, Bonding, and Energetics in AS Level AQA Chemistry. 41 lessons in 7 subtopics.
The plum pudding model, proposed by J.J. The Unveiling the Atom: A Journey Through Time notes cover this in full.
Isotopes are atoms of the same element with the same atomic number, so the same number of protons, but different mass numbers because they have different numbers of neutrons. The Atomic Structure: Mass Number, Isotopes, and Calculations notes cover this in full.
The ideal gas equation is pV = nRT, where p is pressure in pascals (Pa), V is volume in cubic metres (m³), n is the amount in moles, R is the gas constant, 8.314 J mol⁻¹ K⁻¹, and T is temperature in kelvin (K). The Introduction to the Ideal Gas Equation notes cover this in full.
Relative atomic mass = sum of (isotopic mass × percentage abundance) ÷ 100. The Atomic Structure: Mass Number, Isotopes, and Calculations notes cover this in full.
A catalyst is a substance that increases the rate of a chemical reaction without being changed in chemical composition or amount at the end of the reaction. The What are Catalysts? notes cover this in full.
Relative atomic mass (Aᵣ) is the weighted mean mass of an atom of an element, measured on a scale on which the mass of a carbon-12 atom is exactly 12. The Relative Atomic Mass and Relative Molecular Mass notes cover this in full.
Ionic bonding is the strong electrostatic attraction between oppositely charged ions in a lattice. The Ionic Lattices & Compound Ions notes cover this in full.
Examples of endothermic reactions are the thermal decomposition of calcium carbonate, with ΔH⦵ = +178 kJ mol⁻¹, dissolving ammonium nitrate in water, and photosynthesis. The Enthalpy Changes notes cover this in full.