This lesson allows the students to see that ALL electrophilic substitution reactions of benzene progress by the same mechanism: 1 - formation of the electrophile in situ; 2 - attack of the electrophile on the ring; 3 - reformation of the catalyst. 6.1.1 (d) The electrophilic substitution of aromatic compounds with: (i) concentrated nitric acid in the presence of concentrated sulfuric acid (ii) a halogen in the presence of a halogen carrier

This lesson looks at how scientific knowledge develops over time as more evidence becomes available. It is also a chance to review the shapes of atomic orbitals as it builds on knowledge of side-on overlap of the p-orbitals to form the delocalised pi ring of electrons. Students meet the arenes in year 12, but only in passing, so they will have little idea as to the molecular and structural formula of benzene.

Complete lesson and worksheets for electrolysis required practical. Can be adapted to cater for higher or foundation level. Solutions can be found on the resource (Half equations and electrolysis of aqueous solutions). Chemical Changes as per AQA combined science and GCSE chemistry.

An introduction lesson to electroylsis based on chemical changes for AQA combined science and GCSE chemistry. Recap of ionic bonding and state symbols. Predictions electroylsis of molten salts. Simple half equation examples.

Lesson 1 of Energy Changes as per AQA specication (Combined science/GCSE Chemistry). Full set of slides, spaced practice and opportunity for self/peer assessment. Slides and worksheet can be easily adapted to suit other lessons/revision activities.

Revision of chemical reactions and conservation of mass using diagram based equations.

Interactive set of slides that focus on revision of some practical skills and retrieval knowledge from OCR A / OCR B Chemistry at AS level. Feel free to include some / all slides as part of a revision lesson.

A series of slides that cover a range of aspects associated with graphs in science (variables, plotting, gradients, correlation and describing trends)

A complete lesson as per the specificaiton for AQA combined science and GCSE chemistry. This lesson follows on from balancing chemical equations. Introduces a definition for relative formula mass and associated calculations.

A complete lesson as per the specificaiton for AQA combined science and GCSE chemistry. This lesson follows on from a lesson on ‘Chemical Measurements’. Introduction to Avogadros constant, relating relative formula mass and mass to number of particles.

Simple activity that shows conservation of mass through calculations. The use of equations with state symbols challenges students to think of situations where mass ‘appears’ to increase or decrease.

A set of slides to help you plan a neutralisation investigation as well as carry out evaluation focusing on mean calculations and graph skills.

Conservation of mass and balanced chemical equations The first lesson as part of AQA quantitative chemistry for GCSE chemistry. Complete lesson with associated practice questions

A basic summary of covalent, metallic and ionic bonding with follow up questions.

Assess knowledge of bonding, structure and properties of substances through trial and error.

Worksheet and markscheme of some AO1/AO2 style questions.

Assess students ability to distinguish between ionic, metallic and covalent bonding.

Simple activity that shows conservation of mass through calculations. The use of equations with state symbols challenges students to think of situations where mass ‘appears’ to increase or decrease. This resource is complete with mark scheme and additional slides to support teaching.

Chemical changes as per AQA combined science and GCSE chemistry. Complete lesson on extraction of aluminium using electroylsis. Associated worksheets included that elicit prior knowledge of conductivity, video based questions, labelling diagrams and completing half equations. Synoptic links made to life cycle assessments and the use of resources.

A complete lesson with worksheet as per Chemical changes topic AQA cmobined science and GCSE Chemistry. Lesson revises knowledge of structure and bonding before building on an introduction to to electrolysis. Worked examples that get students to predict products of electrolysis and identify oxidation and reduction.