National Chemistry

These notes are for the Scottish National Chemistry course taught in fourth year in most Scottish schools.

The notes available here are concise notes. They are NOT to be considered as material to learn from - they are for revision.

 The notes are arranged under the following topics

National 3 Unit 1
Unit 2
Unit 3

National 4 and 5 Unit 1 Rates of Reaction
Atomic Structure
Bonding and Properties
Acids and bases

National 4 and 5 Unit 2 Fuels and Homologous Series
Consumer Products
Carbohydrates

National 4 and 5 Unit 3 Metals
Plastics
Fertilisers
Nuclear Chemistry
Chemical analysis

.

National 4 and 5 Chemistry Analysis

8.7 Calculations involving

  mass in question =   mole
  mass of 1 mole

concentration is written as "mol/litre" which is a division

  concentration =   mole
  litre

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Techniques for monitoring the environment and methods for reducing pollution and titration with calculations.

Chemists play an important role in society by monitoring our environment to ensure that it remains healthy and safe and that pollution is tackled as it arises.

A variety of methods exist which enable chemists to monitor the environment both qualitatively and quantitatively, such as acid/base titration,

precipitation
Two soluble solutions can react to produce a solid precipitate (insoluble salt) -called
PRECIPITATION.

silver nitrate + sodium chloride -----> silver chloride + sodium nitrate
soluble soluble insoluble soluble
Ag+(aq) + NO3-(aq) + Na+(aq) + Cl-(aq)-----> AgCl(s) + Na+(aq)+ NO3-(-(aq)

spectator ions;
NO3-(aq) and Na+(aq) do not take part in the reaction so are called spectator ions

Flame testing
Certain metal ions cause burn with distinctive colours. These are listed in the dat book

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