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CHEMISTRY FORM 1


i Common Chemistry Laboratory Chemicals
ii Common Chemistry Laboratory Apparatus
iii Safety in the Chemistry Laboratory
iv Why we should learn Chemistry
1. INTRODUCTION TO CHEMISTRY
2. SIMPLE CLASSIFICATION OF SUBSTANCES AND SEPERATION OF MIXTURES
3. ACIDS, BASES AND INDICATORS
4. AIR AND COMBUSTION
5. WATER AND HYDROGEN
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Acids, Bases and Indicators: Applications of acids and bases

3.0 Acids, Bases and Indicators


3.7 Applications of acids and bases


Some uses of bases and acids

  1. Soil pH is measured to determine the kind of crops suitable for the soil. Spinach, for example, does well on acidic soil.
  2. Being basic, wood ash can be added to acidic soil to reduce acidity of the soil.
  3. Aluminium and magnesium hydroxides are used as anti-acid tablets.
  4. Sodium hydroxide is used in the manufacture of bar soap and paper industry.
  5. Potassium hydroxide is used in the manufacture of milder toilet soap (for bathing)
  6. Calcium hydroxide (lime) is mixed with cement to plaster walls, and the oxide is used in the manufacture of cement and toothpaste.
  7. Vinegar, an acid, is used to preserve perishable foods.