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OCR 21st Century Science - Chemistry (J634)

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About this course
Exam dates
Exam papers

About this course

Unit 1 A321 Chemistry A Unit 1 – modules C1, C2, C3
Unit 2 A322 Chemistry A Unit 2 – modules C4, C5, C6
Unit 3 A323 Chemistry A Unit 3 – Ideas in Context plus C7
Unit 4 A329 Chemistry A Unit 4 – Practical Data Analysis and Case Study
Unit 5 A330 Chemistry A Unit 5 – Practical Investigation

This specification comprises seven teaching modules which are assessed through four units. Candidates take Units 1, 2 and 3 and either Unit 4 or 5.

Different tiers can be chosen for different units.

Module contents

Module C1: Air Quality
Which chemicals make up air, and which ones are pollutants? How do I make sense of data about air pollution?
What chemical reactions produce air pollutants? What happens to these pollutants in the atmosphere?
Is air pollution harmful to me, or to my environment?
What choices can we make personally, locally, nationally or globally to improve air quality?

Module C2: Material Choices
What different properties do different materials have?
Why is crude oil important as a source of new materials such as plastics and fibres?
Why does it help to know about the molecular structure of materials such as plastics and fibres?
When buying a product, what else should we consider besides its cost and how well is does its job? How should we manage the wastes that arise from our use of materials?

Module C3: Food Matters
What is the difference between intensive and organic farming?
Why are chemicals deliberately added to food?
How can we make sure that our food does not contain chemicals that may be harmful to health?
Why does what we eat affect our health?

Module C4: Chemical Patterns
What are the patterns in the properties of elements?
How do chemists explain the patterns in the properties of the elements?
How do chemists explain the properties of compounds of Group 1 and Group 7 elements?

Module C5: Chemicals of the Natural Environment
What types of chemicals make up the atmosphere and hydrosphere?
What types of chemicals make up the Earth’s lithosphere?
Which chemicals make up the biosphere?
How can we extract useful metals from minerals?

Module C6: Chemical Synthesis
Chemicals and why we need them
Planning, carrying out and controlling chemical synthesis

Module C7: Further Chemistry
Alcohols, carboxylic acids and esters
Energy changes in chemistry
Reversible reactions and equilibria
Analysis
Green chemistry

Units 3 (ideas in context), 4 & 5

There's quite a lot of information about these units, so I've put them on a separate page here.

Exam dates for 2009/10

Unit 1: January 18 or May 28
Unit 2: January 27 or June 9
Units 3 & 4: available in summer only.

Exam papers

Link to exam papers and other documents

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