What is An acid

 Name of three acid you need to know in year 10:

1. Hydrochloric acid
2. sulfuric Acid
3. Nitric acid

Formulae of acid 

1. HCl
2. H2SO4
3. HNO3

Where do you find acid:

1. Plaque is in your teeth and it poos out acid.
2. Stomach acid is the same as hydrochloric acid and when you throw up the stomach acid burns your teeth.
3. Lemons and oranges have citric acid and it is very sour and if you have a lot you can have diarrhoea.

What is acid:

• an acid contains hydrogen atoms that break off to react with a substance.
• Blue litmus paper changes red when you add acid 
• The Red Litmus paper keeps its colour when it is in acid