Decode the Science Universe

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Across
  1. 1. The process in which a substance gains oxygen or loses hydrogen is called this type of reaction.
  2. 4. The splitting of white light into its seven colours is called this phenomenon.
  3. 5. The process of coating iron with zinc to prevent rusting.
  4. 9. The red pigment in blood that carries oxygen.
  5. 10. The reaction in which one compound breaks into two or more simpler substances.
  6. 11. A transparent material that bends light and is used in spectacles.
  7. 12. The reaction between an acid and a base producing salt and water.
  8. 15. The colourful band of light produced by splitting white light.
Down
  1. 2. The basic filtering unit of the kidney.
  2. 3. The bending of light when it passes from one medium to another is called this.
  3. 6. The tiny air sacs in lungs where exchange of gases takes place.
  4. 7. The mirror used as a rear-view mirror in vehicles.
  5. 8. The movement of food through the digestive tract using muscular contractions.
  6. 13. A reaction where heat is released into the surroundings.
  7. 14. The enzyme present in saliva that helps digest starch.