Form 2 Chap1,3,5,6,8

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Across
  1. 5. ________ test for starch
  2. 7. A nutrient which acts as main source of energy
  3. 9. Animals without a backbone
  4. 10. Sand is not able to dissolve in water but it forms a __________
  5. 12. An indicator which turns pink when react with alkali
  6. 13. The countries with a high total number of species
Down
  1. 1. A condition when a person has irregular bowel movements
  2. 2. Rate of evaporation is higher when the ______ of surrounding air is lower
  3. 3. The force that is spread on a surface of an object
  4. 4. A rigid bar that can rotate freely around a fixed point (pivot) called fulcrum
  5. 6. A type of mineral which is needed by our body to make haemoglobin
  6. 7. A property of both acids and alkali
  7. 8. Plants with only one seed leaf
  8. 11. Energy stored in food is measured in ________