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Grade 10 Science — Metals, non-metals and the reactivity series

Rank metals by the activity series, work out the ion a metal or non-metal forms from its electron shells, and say how each band of the series is won from its ore and kept from corroding.

Name: ________________________

  1. 1.Galvanised iron sheets are coated with a thin layer of which metal?

    • a) Aluminum
    • b) Tin
    • c) Zinc
    • d) Chromium

  2. 2.Sodium is stored in a jar of kerosene oil rather than on a shelf. Why?

    • a) Kerosene makes it easier to cut
    • b) It loses its shine and stops conducting
    • c) It dissolves in the damp air of a laboratory
    • d) It reacts with oxygen so vigorously that it would catch fire in the open

  3. 3.Sort each metal by how the chapter says it is won from the earth.

    Groups: Found in the native state · Reduction using carbon · Electrolysis of the molten compound

    • Iron
    • Silver
    • Aluminum
    • Zinc
    • Sodium
    • Gold

  4. 4.A cell for refining copper is drawn below, with the two plates hanging in the solution and the battery marked. Tap the plate the pure copper builds up on.

    Write the number of the part.

    12

  5. 5.Sort each of these elements as the chapter classifies it.

    Groups: Metal · Non-metal

    • Iodine
    • Mercury
    • Sulfur
    • Sodium
    • Graphite
    • Bromine

  6. 6.Iron nails are sealed into three tubes: A with ordinary water and air, B with boiled water under a film of oil, C with dry air over anhydrous calcium chloride. Which nails rust?

    • a) The nails in C
    • b) The nails in A
    • c) The nails in B and C
    • d) The nails in B

  7. 7.Which pair of statements about ionic compounds matches what the chapter reports?

    • a) They melt at high temperatures and dissolve in water rather than in kerosene
    • b) They melt at low temperatures and dissolve in water rather than in kerosene
    • c) They melt at low temperatures and dissolve in kerosene rather than in water
    • d) They melt at high temperatures and dissolve in kerosene rather than in water

  8. 8.Put these metals in the activity series' own order, from the most reactive down, starting with "Potassium".

    • Potassium
    • Calcium
    • Zinc
    • Gold
    • Magnesium
    • Copper
    • Iron

Answer key — Grade 10 Science — Metals, non-metals and the reactivity series

  1. 1. c) Zinc
  2. 2. d) It reacts with oxygen so vigorously that it would catch fire in the open
  3. 3. Gold → Found in the native state; Silver → Found in the native state; Zinc → Reduction using carbon; Iron → Reduction using carbon; Sodium → Electrolysis of the molten compound; Aluminum → Electrolysis of the molten compound
  4. 4. 2 — The plate wired to the negative terminal
  5. 5. Mercury → Metal; Sodium → Metal; Iodine → Non-metal; Bromine → Non-metal; Graphite → Non-metal; Sulfur → Non-metal
  6. 6. b) The nails in A
  7. 7. a) They melt at high temperatures and dissolve in water rather than in kerosene
  8. 8. 1. Potassium 2. Calcium 3. Magnesium 4. Zinc 5. Iron 6. Copper 7. Gold