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GCSE Combined Science Chemistry topics

41 Chemistry topics for GCSE Combined Science. Each page explains the idea, works through examples, lists the common mistakes and gives practice questions with answers.

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Grades 1 to 4

Grade 3 Atoms, compounds, mixtures and equations
Foundation and Higher
Grade 3 The periodic table and electronic structure
Foundation and Higher
Grade 4 Acids, bases and making salts
Foundation and Higher
Grade 4 Atomic structure, isotopes and models of the atom
Foundation and Higher
Grade 4 Earth's resources, potable water and waste water
Foundation and Higher
Grade 4 Ionic bonding and ionic compounds
Foundation and Higher
Grade 4 Maths skills for chemistry
Foundation and Higher
Grade 4 Metallic bonding and states of matter
Foundation and Higher
Grade 4 Purity, formulations and chromatography
Foundation and Higher
Grade 4 Relative formula mass and conservation of mass
Foundation and Higher
Grade 4 Tests for gases
Foundation and Higher
Grade 4 The Earth's atmosphere, past and present
Foundation and Higher

Grades 5 and 6

Grade 5 Corrosion, alloys and materials
Foundation and Higher
Grade 5 Covalent bonding and giant covalent structures
Foundation and Higher
Grade 5 Crude oil, hydrocarbons and cracking
Foundation and Higher
Grade 5 Exothermic and endothermic reactions
Foundation and Higher
Grade 5 Greenhouse gases, climate change and air pollution
Foundation and Higher
Grade 5 Groups 0, 1 and 7
Foundation and Higher
Grade 5 Life cycle assessments, recycling and getting metals sustainably
Foundation and Higher
Grade 5 Rates of reaction and catalysts
Foundation and Higher
Grade 5 Reactivity series and extracting metals
Foundation and Higher
Grade 5 Required practicals and working scientifically in chemistry
Foundation and Higher
Grade 5 Transition metals
Foundation and Higher
Grade 6 Chemical cells and fuel cells
Foundation and Higher
Grade 6 Concentration and limiting reactants
Foundation and Higher
Grade 6 Electrolysis
Foundation and Higher
Grade 6 Electrolysis of aqueous solutions
Foundation and Higher
Grade 6 Empirical formulae and percentage composition
Foundation and Higher
Grade 6 Nanoparticles
Foundation and Higher
Grade 6 Percentage yield and atom economy
Foundation and Higher
Grade 6 Reversible reactions and equilibrium
Foundation and Higher
Grade 6 The Haber process and fertilisers
Foundation and Higher

Grades 7 to 9

Grade 7 Alkenes, alcohols and carboxylic acids
Foundation and Higher
Grade 7 Equilibrium: predicting shifts and the Haber compromise
Higher tier content
Grade 7 Extracting metals by electrolysis
Foundation and Higher
Grade 7 Gas volumes
Higher tier content
Grade 7 pH, strong acids and weak acids
Foundation and Higher
Grade 7 Polymers
Foundation and Higher
Grade 7 The mole and reacting masses
Higher tier content
Grade 8 Exam calculations: moles, solutions, titration and yield
Higher tier content
Grade 8 Titrations and their calculations
Higher tier content

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