1. Salts
By Amy Badger

2. Acid + Metal = Salt + Hydrogen
For example
Sulphuric acid + Potassium hydroxide =
Potassium sulphate + Hydrogen

3. Acid+ Base = Salt + Water
For example
Nitric acid + Potassium oxide =
Potassium nitrate + water

4. Acid + Alkali = Salt + Water
For example
Hydrochloric acid + Potassium hydroxide =
Potassium sulphate + Water

5. Acid + Carbonate = Salt + Water + Carbon Dioxide
For example
Sulphuric acid + Potassium carbonate =
Potassium sulphate + Water + Carbon Dioxide

6. Precipitation
Precipitation is when you make insoluble salts by reacting two soluble salts. The salt is formed as a solid. This reaction is useful when we want to remove metal ions from polluted ions.
For example:
Lead nitrate + sodium chloride =
Lead chloride+ sodium nitrate

7. Solubility of salts
All sodium, potassium and ammonium salts are soluble in water.
All nitrates are soluble in water.
All sulphates are soluble in water except: lead, barium and calcium sulphate.
All chlorides are soluble In water except silver and lead chloride.
All carbonates are insoluble in water except sodium, potassium and ammonium carbonate.

8. Questions An acid plus a base equals what?
How do you make a salt, water and carbon dioxide?
Precipitation is when you make insoluble salts by reacting what?
Are nitrates soluble?
Is Lead sulphate soluble?

9. Answers
Salt + Water
Acid + Carbonate
Two soluble salts
Yes No