OCR GCSE Applied Science Double Award J648, help links, UNIT 1 DEVELOPING SCIENTIFIC SKILLS, UNIT 2 SCIENCE FOR THE NEEDS OF SOCIETY, UNIT 3 SCIENCE AT WORK student exam revision help revision notes practice exam questions past papers







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Doc Brown's Chemistry OCR KS4 GCSE Applied Science Double Award

My unofficial support for the CHEMISTRY of the double award course for Year 10 and Year 11 OCR GCSE Applied Science Double Award syllabus-specification

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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?

My on-site help links on this page for the CHEMISTRY of the following syllabus specifications:

OCR GCSE Applied Science Double Award J648

Unit 1 Developing Scientific Skills * Unit 2 Science for the Needs of Society * Unit 3 Science at Work

My support links for the science-chemistry sections of OCR GCSE Applied Science Double Award

OCR GCSE Applied Science Double Award

UNIT 1 DEVELOPING SCIENTIFIC SKILLS

Chemical Analysis

Qualitative Analysis

The chemical identity tests page gives details for Na⁺, K⁺, Ca²⁺, Cu²⁺, Pb²⁺, Fe³⁺, Cl^-, SO₄^2-, CO₃^2- ions using reagents and/or flame tests.
How to use paper/thin layer chromatography to determine composition is described on the Elements Compounds and Mixtures page and also on the Extra Organic Chemistry page. On the Extra Industrial Chemistry page gas-liquid chromatography (gc/glc) analysis is described .

Quantitative Analysis

Part 11 chemistry calculations shows how to calculate the quantities to prepare solutions of specified concentrations using the units: g dm^-3 and mol dm^-3
There is a basic titration description on the Acids, Bases and salts page, though the context here is salt preparation rather than analysis.
Part 12 chemistry calculations shows how to carry out a titration procedure and calculations to determine the concentration of an acidic/alkaline substance in solution.

OCR GCSE Applied Science Double Award

UNIT 2 SCIENCE FOR THE NEEDS OF SOCIETY

Section 2.3 Obtaining Useful chemicals

2.3.1 Useful Chemicals - The Building Blocks

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.
Atomic Structure Notes - the structure of atoms, isotopes, nuclear structure notation, electronic structure and the Periodic Table.
The Periodic Table Notes - 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.
Appendix 1. Symbols and formulae of Elements and Compounds to know
Oil and useful products - The hydrocarbons from oil, fuels, polymers/plastics.
Extra Organic Chemistry Notes - more on organic compounds, synthetic and natural and their importance, also comparison with inorganic compounds.
The Transition Metals and Uses of other metals - examples of useful metals.
Ammonia synthesis and fertilisers - examples of useful inorganic chemicals.

2.3.2 Useful Chemicals - Using Raw Materials

Extra Industrial Chemistry Notes - limestone and uses.
Elements, Compounds, Mixtures Notes - includes the laboratory purification of salt.
Oil and useful products - fractional distillation to separate products from oil and their uses.
Notes on Extraction of Metals - the extraction of iron, some economic and environmental discussion points at the end of the page.

2.3.3 Chemical Manufacture

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. See also enzymes, energy changes

Section 2.4 Chemical and Material Behaviour

2.4.1 Mixtures

Extra Aqueous Chemistry - Section 1. has brief notes on colloids.

2.4.2 Materials

Material structure and Types of Chemical Bonding - Ionic, covalent (simple molecule, giant covalent structures, polymers) and metallic bonding (including alloys) theory and examples, physical properties of elements and compound explained.
The Transition Metals and Uses of other metals - chemical and physical properties of them, uses of iron, copper, chromium etc., and a section on the uses and applications of other non-transition metals.
Extra Industrial Chemistry Notes - uses of titanium.
Oil and useful products - sections on polymers/plastics.
Extra Organic Chemistry Notes - sections on polymers/plastic.

Section 2.5 Importance of Energy, Electricity and Radiation

2.5.1 Energy Resources -fuels

Oil and useful products - fossil fuels. See also Alternative and Fossil Fuel Survey.
Extra Organic Chemistry Notes - section 1. on burning organic compounds.
Radioactivity and Nuclear Power - The structure of atoms linked to the properties and uses of alpha, beta and gamma radiation, radioisotope dating, half-life and explanation of fission/fusion nuclear reactions etc. Associated Quizzes and worksheets.