Acid

Today I will start teaching about acid and I will not teach in pure english..I will mix english with malay as I need to.

Acid-a chemical substance that ionize in water to form Hydrogen ions, H⁺
Basically acid have pH value lower than 7.
Change blue litmus paper colour to red.
React with base to form metal salt and water.

Properties of acid :

React with base to form metal salt and water.
For example Hydrochloric acid will react with Potassium Hydroxide to form Potassium chloride and water.

HCl + KOH → KCl + H₂O

For example Sulphuric acid will react with Zinc Oxide to form Zinc sulphate and water.

H₂SO₄ + ZnO → ZnSO₄ + H₂O

React with reactive metal to form metal salt and liberate H₂ gas.
For example Nitric acid react with Magnesium to form Magnesium nitrates.

2HNO₃ + Mg → Mg(NO₃)₂ + H₂

React  with metal carbonate to form metal salt, CO₂ and water.
For example Sulphuric acid react with Calcium carbonate

H₂SO₄ + CaCO₃ →CaSO₄ + H₂O + CO₂