Across
- 1. brown flake substance acquires on the surface of iron after long exposure to moisture is ?
- 3. When Carbon Dioxide passes through lime water it turns lime water?
- 6. Fatty foods become rancid due to the process of __
- 8. __ gas is filled in packet of chips to prevent rancidity
- 10. change in state is _ reaction
- 13. ___agent reduces the other reactant and oxidizes itself
- 15. we should never change __ of formula
- 17. aqueous solution of sodium chloride is known as?
- 18. oxidation of fats and oils which makes the smell and taste bad is known as?
- 20. plaster of paris changes to _ on mixing with water
Down
- 2. Equation which doesn't follow the law of conservation of mass
- 4. PH stands for ___in German meaning power
- 5. ___Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound
- 7. On heating calcium carbonate turns into calcium __
- 9. Respiration is example of _ reaction?
- 11. Gas evolved when zinc reacts with dilute HCL
- 12. Oxide of which element is used as major ingredient in cement
- 14. white silver chloride changes into ___colour when exposed to sunlight
- 16. hydrogen gas burns with __ sound
- 19. What does the symbol (aq) represent in a chemical equation