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