1.1 Chemistry and Its Importance

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Card 1: Explain the meaning of chemistry

Chemistry

Chemistry is the science of matter that deals with the composition, structure, and properties of substances and with the transformations that they undergo.

Card 2: State the uses of sodium chloride in daily life.

Uses of Sodium Chloride (NaCl)

  • Uses in cooking. (Table salt)
  • As preservative of food.
Card 3: State the uses of sulphuric acid in daily life.

Uses of Sulphuric Acid

As electrolyte in car battery.

Car Battery

Card 4: State the uses of ethanoic acid in daily life.

Uses of Ethanoic acid

  • Food flavouring (Vinegar)
  • As preservative of fruit
Card 5: State the uses of ethanol in daily life.

Uses of Ethanol (C2H5OH)

  • Making alcoholic drink. (Ex.: Wine, Beer ...)
  • As solvent.
  • As anticeptic.
Card 6: State the uses of sodium bicarbonate in daily life.

Uses of Sodium Bicarbonate (NaHCO3)

  • As baking powder.
  • Used as an antacid to treat acid indigestion in medical.
  • As cleaning agent.
Card 7: State the uses of calcium carbonate in daily life.

Uses of Calcium Carbonate

  • As caicium supplement.
  • As an antacid to treat acid indigestion in medical.
  • Used in the production of toothpaste.
Card 8: State the uses ofmagnesium oxide in daily life.

Uses of Magnesium Oxide

Used as an antacid to treat acid indigestion in medical.

Card 9: List 5 examples of occupation that require the knowledge of chemistry.

Occupation that Require the Knowledge of Chemistry

  1. Chemist
  2. Chemical Engineer
  3. Nutritionist
  4. Doctor
  5. Food technologist
Card 10: State 2 contributions of chemical base industries towards the development of a country

Contribution of Chemical Base Industry

  1. Create jobs opportunities.
  2. Improve the standard of living of the people.

SPM Physics in 3 Days