Salt

Contents

Key Stage 2

Meaning

Salt usually refers to the small white grains added to food to improve the flavour.

About Salt

Table salt is small white crystals.

Not all salts are the same as table salt and most types of salt are not safe to eat.

Key Stage 3

Meaning

Salts are a group of chemicals made in neutralisation reactions.

About Salt

There are many different salts, most of which are harmful to humans.

Halides	Sulphates	Nitrates
Lithium Fluoride Sodium Chloride Magnesium Bromide Calcium Iodide	Potassium Sulphate Aluminium Sulphate Iron Sulphate Copper Sulphate	Beryllium Nitrate Ammonium Nitrate Potassium Nitrate Zinc Nitrate

Key Stage 4

Meaning

Salts are a group of chemicals made in neutralisation reactions.

About Salt

There are many different salts, most of which are harmful to humans.

Halides	Sulphates	Nitrates
Lithium Fluoride - LiF Sodium Chloride - NaCl Magnesium Bromide - MgBr2 Calcium Iodide - CaI2	Potassium Sulphate - K2SO4 Aluminium Sulphate - Al2(SO4)3 Iron Sulphate - Fe2(SO4)3 Copper Sulphate - CuSO4	Beryllium Nitrate - Be(NO3)2 Ammonium Nitrate - NH4NO3 Potassium Nitrate - KNO3 Zinc Nitrate - Zn(NO3)2

References

AQA

Salts, page 129, GCSE Combined Science; The Revision Guide, CGP, AQA

Salts, page 247, GCSE Combined Science Trilogy 1, Hodder, AQA

Salts, pages 114, 280, GCSE Chemistry, Hodder, AQA

Salts, pages 125, 130-132, 134-136, GCSE Combined Science Trilogy; Chemistry, CGP, AQA

Salts, pages 147, 155-157, 159-161, GCSE Chemistry, CGP, AQA