Metals and Non Metals
Q.1. What are the uses of copper, silver, gold, iron, aluminium and mercury?
Q.2. What are elements?
Q.3. How many elements are known till today?
Q.4. How many elements occur naturally?
Q.5. How are elements classified?
Q.6. What are minerals?
Q.7. What are ores?
Q.8. Which non-metals are found in the free state?
Q.9. Which gases occur only in a free state in nature?
Q.10. State the physical properties of metals and non-metals?
Q.11. What do you mean by lustrous?
Q.12. What is ductility? Which metals are ductile?
Q.13. What is malleability? Which metals are malleable?
Q.14. State the chemical properties of metals and non metals?
Q.15. What is electropositivity? Which is electropositive, metals or nonmetals?
Q.16. What is electronegativity? Which is electronegative, metals or nonmetals?
Q.17. Which compound is formed by iron with oxygen at high temperature?
Q.18. Which compound is known as Philosopher’s wool?
Q.19. Which coloured flame is produced when zinc is strongly heated with oxygen?
Q.20. What is produced by the reaction of non metals with oxygen?
Q.21. Which coloured flame is produced when sodium metal is heated with oxygen?
Q.22. Which compound is produced when sodium metal is heated with oxygen?
Q.23. What happens when magnesium is heated with oxygen?
Q.24. Which compound is produced when copper is heated with oxygen?
Q.25. What is the nature of oxides of metals?
Q.26. What is produced by the reaction of nonmetals with oxygen?
Q.27. What is produced when sulphur burns in oxygen?
Q.28. Which acid is produced when sulphur is dissolved in water?
Q.29. Which compound is produced when phosphorus burns in oxygen?
Q.30. Explain the reaction of metals with water?
Q.31. What happens when sodium and potassium is reacted with water?
Q.32. What happens when magnesium reacts with hot water or steam?
Q.33. What happens when calcium reacts with water?
Q.34. What happens when iron reacts with water?
Q.35. What happens when zinc reacts with steam?
Q.36. Does copper react with water?
Q.37. Do non metals react with water?
Q.38. What happens when metals react with dil.HCL and dil. H2SO4?
Q.39. Do non metals react with dilute acids?
Q.40. What happens when zinc reacts with sodium hydroxide?
Q.41. What happens when tin reacts with sodium hydroxide?
Q.42. What happens when aluminium reacts with sodium hydroxide and water?
Q.43. What happens when aluminium reacts with sodium hydroxide?
Q.44. What is a reactivity series or activity series? Write it.
Q.45. What is the displacement reaction? Give an example.
Q.46. What happens when zinc reacts with copper sulphate solution?
Q.47. What happens when iron reacts with copper sulphate solution?
Q.48. What happens when copper reacts with silver nitrate solution?
Q.49. What happens to the blue solution of copper sulphate when zinc is added to it?
Q.50. What happens to the blue solution of copper sulphate when iron is added to it?
Q.51. What happens to a colourless solution of silver nitrate when copper is added to it?
Q.52. What is rust? Explain the reaction of iron with moist air.
Q.53. What happens when copper is reacted with moist air?
Q.54. What are the uses of metals?
Q.55. What are the uses of non metals?
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