A booklet for students to compelte for the chemistry section of the BTEC principles of science exam.

Hess’s law set out clearly. Powerpoint slides, past exam question homework sheets (with mark schemes) on Hess’s Law including: calculating enthalpy of reaction from enthalpies of formation calculating enthalpy of reaction from enthalpies of combustion It includes step-by-step examples and how to set answers out for this potentially tricky topic. It all matches OCR A level chemistry A spec section 3.2.1 (g)

Detailed powerpoint presentations to cover explanations and examples for the A level chemistry topics: deriving redox equations from oxidation numbers manganate titrations thiosulphate / iodine titration this matches the OCR A level chemistry specification section 5.2.3 (a-e)

Group 2 fully covered. Powerpoint presentations and two homework sheets (past exam questions with answers) covering group 2 reactions for A level chemistry. This includes reactions of the elements with oxygen and water, and reactions and uses of the oxides and hydroxides. There’s also a summary activity. This all matches the OCR A level chemistry A spec section 3.1.2

All you need to teach A level ‘how fast’. A series of powerpoint presentations and some homework sheets (past exam questions with mark schemes) covering the following topics for A level chemistry: how to determine orders and rate equations from experimental data half life of first order reactions rate-concentration graphs deducing a mechanism from the rate date and rate determining step Aarrhenius equation This all matches the OCR A level spec section 5.1.1

All you need for entropy and free energy teaching. Detailed powerpoint presentations on the A level chemistry topics of entropy and free energy including: definition of entropy determining if the entropy change of a reaction is positive or negative definition of Gibbs free energy using Gibbs free energy to determine if a reaction is feasible determining the minimum temperature for a reaction to be feasible This matches with the OCR A level chemistry A specification section 5.2.2

All of Kc and Kp here, including the tricky parts. Powerpoints and homework sheets (past exam paper questions with mark schemes) covering A level chemistry topics including: revision of Kc heterogeneous and homogeneous equilibria calculating Kc from initial and equilibrium amounts calculating Kp explaining changes in equilibrium position using Kc and Kp This matches the OCR A level Chemistry A spec section 5.1.2

All you need for the tricky electrode potentials topic. Clear powerpoint presentations and an exam question homework (with mark scheme) to cover the A level chemistry topic of electrode potentials including explanations, examples and questions for: standard electrode potentials constucting cells to measure electrode potential working out the feasibility of a reaction constructing feasible redox equations and calculating cell potential describing storage cells and fuel cells This covers section 5.2.3 (f-k) of the OCR A level chemistry specification.

Group 7 covered in detail + ions tests. Powerpoint presentations and an exam question homework sheet covering the group 7 (halogens) topic for A level chemistry. This includes reactions of halogens with water and sodium hydroxide, interhalogen reactions, explaining the reactivity trend, testing for halides, and other qualitative tests for ions (such as sulfate, carbonate and ammonium). It all matches the OCR A level chemistry spec sections 3.1.3 and 3.1.4

The whole acids, bases and buffers topic covered. A series of powerpoints and some homework sheets with markschemes to cover A level chemistry topics on: definitions of acids and bases conjugate acid-base pairs calculating pH of strong acids calculating pH of weak acids calculating pH of strong bases using the ionic product of water Kw explaining the action of buffers calculating the pH of buffers choice of indicators for acid-base titrations This all matches the OCR A level chemistry A spec section 5.1.3

A detailed look at intermolecular forces. A powerpoint presentation for A level chemistry. It matches the OCR spec section 2.2.2 (k-o). It covers electronegativity, dipole-dipole attractions, London dispersion forces and hydrogen bonding. Some past-paper questions on these topics with the mark schemes are also included - could be used for checking in lessons or homework.

Presentations and worksheets to revise A level chemistry acids, bases and buffers topics. This was designed for the OCR A level chemistry A course. It contains a worksheet summary of the topic for students to add details to as well as some practice calculations with answers.

Oxidation numbers covered clearly. A powerpoint and worksheets (including some past exam questions with mark schemes) on oxidation numbers. It matches the OCR A level chemistry A spec section 2.1.5 (redox)

Lots to explain moles calculations. A series of powerpoint presentations and a past-exam question homework sheet (with mark scheme) covering A level chemistry topics on: what is a mole mole and mass calculations moles, concentration and volume calculations moles and gas volume calculations examples of titration problems It doesn’t include pV=nRT It matches the OCR A level chemistry spec section 2.1.3 (a-e)

Detailed resources for starting off organic chemistry. A series of powerpoint presentations and some worksheets covering the following A level chemistry topics: IUPAC nomenclature homologous series and alkanes and alkenes structural and stereoisomerism These resources are matched to the OCR Chemistry A spec section 4.1.1 a-e

All of the ionisation energy topic covered here. A powerpoint presentation and two exam question homework sheets covering ionisation energy for A level chemistry. This includes trends across a period, trends down a group and successive ionisation energies of an atom with the required explanations. This is all matched to OCR chemistry A spec section 3.1.1

Summary sheets for the redox and transition metals topics from OCR A level chemistry A. Includes details of reagents needed for the required redox reactions and the required colours of transition metal complex ions.

All you need for periodicity. Three powerpoint presentations covering periodicity, giant covalent structures and giant metallic structures for A level chemistry. A long-answer exam question with mark scheme is also included. This is suitable for OCR chemistry A spec section 3.1.1

All you need to deliver teaching on Born Haber and enthalpy of solution. Powerpoints and a homework sheet (exam questions with mark scheme) for the A level chemistry topics of Born Haber cycles including: how to construct a Born Haber cycle for NaCl (requires teacher annotations) how to construct more complicated cycles with differently charged ions example questions how to calculate enthalpy of solution explanations of how ion charge and size affect lattice enthalpy and enthalpy of hydration this matches with the OCR A level chemistry A specification section 5.2.1

Clarifies the connection between shells, then sub-shells and then orbitals. For OCR A level Chemistry A powerpoint for section 2.2.1 electron structure, describing the order, shapes and arrangements of shells, sub-shells and orbitals

All of molecular shapes covered here. A powerpoint presentation on shapes of molecules for A level chemistry. This matches the OCR A level chemistry spec section 2.2.2 (g-h). It covers all of the required shapes, includes example molecules for each shape and has an explanation of how to answer exam questions on this topic to achieve full marks.