Doc Brown's Chemistry  WJEC KS4 GCSE Science-Chemistry

My unofficial support for the CHEMISTRY of the syllabus-specifications of WJEC (CBAC) GCSE SCIENCE COURSES * WJEC GCSE SCIENCE - CHEMISTRY 1 * WJEC GCSE ADDITIONAL SCIENCE - CHEMISTRY 2 * WJEC GCSE SEPARATE SCIENCES - CHEMISTRY 3  * WJEC GCSE Additional Applied Science

At the start of your GCSE Science-CHEMISTRY course (via broadband at school or home) ...

... How much Chemistry and Earth Science have you remembered from KS3 Science?

... click on the WJEC link at the top of this multiple choice Quiz to return to this page

*  WJEC GCE AS Chemistry  *  WJEC A2 Chemistry  *

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WJEC GCSE SCIENCE - CHEMISTRY 1

for WJEC GCSE Science Chemistry 1 examination paper Unit 2 Foundation (023601) Higher (023602)

1. AT0MIC STRUCTURE, ELEMENTS AND THE PERIODIC TABLE

• Atomic Structure Notes - the structure of atoms, isotopes, nuclear structure notation, electronic structure and the Periodic Table. Quizzes and worksheets on atomic structure.

• Summary of the Periodic Table - Explanation and overview of Groups, Periods, Series etc. with links to more detailed notes on the Group 1 Alkali Metals, Group 7 Halogens, Group 0 Noble Gases and Transition Metals. Section 3. Quizzes and worksheets based on the Periodic Table.

• Group 1 The Alkali Metals Notes - Tabulated element data for lithium, sodium and potassium etc., physical and chemical properties of the metals, group trends, reactions with water, oxygen and chlorine, theory of group reactivity trend, compound formulae, uses of metals and compounds. Section 4. Quizzes and worksheets on the Alkali Metals.

• Group 7 The Halogens Notes - data, physical properties and chemistry of elements chlorine, bromine, iodine and their compounds, electrolysis of aqueous sodium chloride/brine and the uses of the products - chlorine, hydrogen and sodium hydroxide. Alphabetical keyword-phrase list at top of page. Section 8. Quizzes and worksheets on The Halogens.

• Chemical Identity Tests - Gives descriptions of lots of tests for gases and ions etc. and use the keyword alphabetical index near top of the page.

2. COMPOUNDS

• Elements, Compounds, Mixtures Notes - Much basic chemistry on this page e.g. definitions and examples of atoms, elements, compounds and mixtures, separation methods, physical & chemical changes and sections on 'how to understand and write chemical equations' and work out the formula of a compound. Quizzes and worksheets on element symbols, displayed formula, compound formulae and equations (keyword-phrase index at top of page).

• Notes on Acids, Bases, Alkalis and Salts - including lots of formulae in section (8) and elsewhere on the page.

3. USING CHEMICAL REACTIONS TO MAKE NEW MATERIALS

• Elements, Compounds, Mixtures Notes - what is a chemical reaction?

• Notes on Energy changes-transfers in Chemical Reactions - Exothermic and endothermic energy changes

4. RATES OF CHEMICAL CHANGE

• Factors affecting the rates-speeds of chemical reactions - the factors affecting reaction rates, experimental methods for obtaining data, graphs, energy change-reaction profiles and activation energies. Associated Quizzes and worksheets.

5. NANOSCIENCE

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6. THE PRODUCTION and USE OF FUELS

• Oil and useful products - Fractional distillation to separate the hydrocarbons from oil and their use as fuels, combustion - equations, environmental. See also Global warming discussion page. Associated Quizzes and worksheets.

• Notes on Energy changes-transfers in Chemical Reactions - Exothermic and endothermic energy changes, bond energy calculations, simple calorimetry, energy released by fuels and its measurement and calculation. Associated Quizzes and worksheets.

7. EVOLUTION AND MAINTENANCE OF THE ATMOSPHERE

• Global warming discussion page.

• Earth Science Notes - based a series of 'cue' questions. Section 1. on atmospheric evolution, carbon cycle.

8. GEOLOGICAL PROCESSES

• Earth Science Notes - based a series of 'cue' questions on atmospheric evolution, carbon cycle, igneous-metamorphic-sedimentary rock formation and properties, plate tectonics and rock cycle etc. Associated Quizzes and worksheets.

WJEC GCSE ADDITIONAL SCIENCE - CHEMISTRY 2

for WJEC GCSE Science Chemistry 2 examination paper Unit 2 Foundation (024001) Higher (024002)

1. ATOMIC STRUCTURE

• Atomic Structure Notes - the structure of atoms, isotopes, nuclear structure notation, electronic structure and the Periodic Table. Quizzes and worksheets on atomic structure.

2. CHEMICAL BONDING, STRUCTURE AND PROPERTIES

• Material structure and Types of Chemical Bonding - Ionic, covalent (simple molecules, giant covalent structures, polymer structure) and metallic bonding (including alloys) theory and examples, physical properties of elements and compound explained. Associated Quizzes and worksheets.

3. THE PRODUCTION AND USE OF METALS

• The Reactivity Series of Metals, Corrosion and  Redox Reaction Notes - The reactions of metals with oxygen, water and acids, displacement reactions, rusting of iron and preventing its corrosion, plus a detailed introduction to oxidation-reduction (redox) reactions, simple cells etc.  The notes on each metal are listed in reactivity order. Associated Quizzes and worksheets.

• The Mining of Minerals and the Extraction of Metals - the extraction of aluminium, chromium, copper (and purification), iron, sodium, titanium and zinc, method details and equations, and method related to reactivity of metal and environmental issues. Associated Quizzes and worksheets.

• Extra notes on Electrochemistry - an introduction to electrolysis, theory, electrolysis cells, industrial electrolysis process links summary, experimental methods for electrolysis, electrode equations, simple cells/batteries, fuel cells etc.

4. CHEMICAL CALCULATIONS

• Chemical Calculations Index of to sections 1. to 16. of explained examples and quizzes built into the notes. Section 1. Relative atomic mass and its calculation. Section 2. formula mass, Section 3. Conservation of mass and simple reacting mass calculations. Section 4. % composition by mass of a compound,  section 5. empirical formula,  sections 3. & 6. Reacting mass and % & theoretical yield & atom economy,  Section 14. % & theoretical yield & atom economy

5. AMMONIA AND FERTILISERS

• Ammonia synthesis, reversible reactions and chemical equilibrium notes - including reversible reactions, equilibrium theory, nitric acid manufacture, fertiliser ammonium salt preparation, problems with over-use or fertilisers. Associated Quizzes and worksheets.

• Chemical Identity Tests - Gives descriptions of tests for ammonium ion and ammonia gas etc. and use the keyword alphabetical index near top of the page.

6. ALKANES, ALKENES and POLYMERS

• Oil and useful products - The hydrocarbons from oil and their uses e.g. fuels, polymers/plastics, cracking, fossil fuels and environmental problems etc.

• Extra Organic Chemistry Notes - More on alkane & alkene homologous series 'families'.

7. SMART MATERIALS

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8. WATER

• Water and Extra Aqueous Chemistry Notes - water treatment, hard and soft water, solubility.

WJEC GCSE SEPARATE SCIENCES - CHEMISTRY 3

1. ORGANIC CHEMISTRY

• Oil and useful products - The hydrocarbons from oil - alkanes, alkenes, combustion.

• Extra Organic Chemistry Notes - Alkane & alkene homologous series 'families', alcohols like ethanol, other organic molecule families e.g. carboxylic acids, esters, polymers, more on combustion.  Use sub-index and keyword list at top of page.

2. SULPHURIC ACID

• Extra Industrial Chemistry Notes - sulphuric acid section.

• Acids, Bases, Alkalis, pH, Neutralisation and Salts - includes theory, lots of formulae and word and balanced symbol equations, salt preparations and equations. Associated section 12. of Quizzes and worksheets.

• Water and Extra Aqueous Chemistry Notes - acid-base theory, comparison of weak and strong acids.

3. CHEMICAL CALCULATIONS

• Chemical Calculations Index of to sections 1. to 16. of explained examples and quizzes built into the notes. Section 7. Introducing moles, Section 11. making up solutions, concentration & molarity, Section 12. acid-alkali titration - apparatus/analysis.

4. LIMESTONE

• Extra Industrial Chemistry Notes - limestone section.

5. INORGANIC QUALITATIVE ANALYSIS

• Chemical Identity Tests - Gives descriptions of lots of tests for gases and ions etc. and use the keyword alphabetical index near top of the page. Chemical hazard warning symbols

WJEC GCSE Additional Applied Science

Forensic Science

• Chemical Identity Tests - Gives descriptions of lots of tests for gases and ions (cations and anions) etc. and use the keyword alphabetical index near top of the page.

• Methods of separating mixtures (keyword-phrases index at top of page)

• Calculations section 7. introducing moles - the connection between moles, mass and formula mass

• Calculations section 11. Making up solutions - concentration and molarity

• Calculations section 12. Volumetric acid-alkali titration calculations - apparatus and analysis

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