Chemical changes in daily life

• Burning of magnesium ribbon

Magnesium (Mg) + Oxygen (O ₂ ) → Magnesium oxide (MgO) (burns with a bright light)

• Adding Water to Magnesium Oxide 

Magnesium oxide (MgO) + Water (H ₂ O) → Magnesium hydroxide [Mg(OH)2] (Magnesium Hydroxide is a base)

• Adding vinegar to baking soda

Vinegar (Acetic acid) + Baking soda (Sodium hydrogencarbonate) → Carbon dioxide + other substances

• Reaction of Copper sulphate with iron

Copper sulphate solution (blue) + Iron → Iron sulphate solution (green) + Copper (brown deposit)

• Reaction of carbon dioxide with lime water

Carbon dioxide (CO ₂ ) + Lime water [Ca(OH)2] → Calcium Carbonate (CaCO ₃ ) + Water (H ₂ O)