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Level 1 Worksheet: Metals and Non-Metals

Class: 10 Science Topic: Reactivity & Bonding Max. Questions: 45
Name:
Date:
Section A: Reactivity Series Logic

Predict if a reaction will occur or not. If yes, write the products:

  1. Iron nail in Copper Sulphate solution. (Yes/No) __________
  2. Copper wire in Iron Sulphate solution. (Yes/No) __________
  3. Zinc strip in Copper Sulphate solution. (Yes/No) __________
  4. Silver coin in Copper Sulphate solution. (Yes/No) __________
  5. Magnesium ribbon in Hydrochloric acid. (Yes/No) __________
  6. Copper turnings in Hydrochloric acid. (Yes/No) __________
  7. Sodium metal in cold water. (Yes/No) __________
  8. Magnesium metal in cold water. (Yes/No) __________
  9. Iron filings in steam. (Yes/No) __________
  10. Gold ring in nitric acid. (Yes/No) __________
Section B: Chemical Reasoning

Answer the following:

  1. Why is Sodium kept immersed in kerosene oil?
  2. Define Amphoteric Oxides. Give two examples with chemical formulae.
  3. Why does calcium float when it reacts with water?
  4. Why are electrical wires coated with PVC or rubber?
  5. Why do ionic compounds not conduct electricity in the solid state but do so in the molten state?
  6. Why is Aluminium used for making cooking utensils despite being a highly reactive metal?
  7. Sulphide ores are converted into oxides before reduction. Why?
  8. Why is Carbon not used to reduce the oxides of Sodium or Aluminium?
  9. State two conditions necessary for the rusting of iron.
  10. Why is gold used for making jewellery? (Give 2 reasons).
Section C: Ionic Bonding & Compounds
  1. Show the formation of Sodium Oxide ($Na_2O$) by the transfer of electrons. (Atomic No: Na=11, O=8).
  2. Show the formation of Magnesium Chloride ($MgCl_2$) by electron transfer.
  3. List three general properties of Ionic compounds.
  4. Why do ionic compounds have high melting and boiling points?
  5. Are ionic compounds soluble in Kerosene? Explain.
Section D: Metallurgy & Corrosion
  1. Differentiate between Roasting and Calcination processes.
  2. What is 'Anode Mud' in the electrolytic refining of Copper?
  3. Chemical formula of Rust is __________.
  4. Name an alloy of Mercury.
  5. Why is Solder used for welding electrical wires?
  6. Name the constituents of Stainless Steel.
  7. How does Galvanization protect iron from rusting?
  8. Which method is suitable for preventing an iron frying pan from rusting? (Greasing/Painting/Zinc Coating).
  9. Name the ore of Mercury. Write the reaction involved in its extraction.
  10. What happens when Zinc Carbonate is heated in the absence of air? Write the equation.