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Metals

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Properties of metals

Subtopic

Properties of metals under Metals for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is a physical property generally associated with metals?

    A.

    Low melting point

    B.

    High electrical resistance

    C.

    High density

    D.

    Brittle nature

  2. 2.

    When a piece of magnesium ribbon is added to dilute hydrochloric acid, bubbles of gas are produced. What is the identity of this gas?

    A.

    Oxygen (O2O_{2})

    B.

    Carbon dioxide (CO2CO_{2})

    C.

    Chlorine (Cl2Cl_{2})

    D.

    Hydrogen (H2H_{2})

  3. 3.

    Metals are often used to make wires because they are ductile. What happens to the internal structure of a metal when it is drawn into a wire?

    A.

    The atoms lose electrons to become ions

    B.

    The metallic bonds break and reform in new positions

    C.

    The layers of atoms slide over each other without breaking the metallic bond

    D.

    The delocalized electrons become fixed in place

Download the worksheet for Metals - Properties of metals to practice offline. It includes additional chapter-level practice questions.

Reactivity series

Subtopic

Reactivity series under Metals for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following lists the metals in the correct order of decreasing reactivity (most reactive to least reactive)?

    A.

    Potassium > Magnesium > Zinc > Gold

    B.

    Gold > Zinc > Magnesium > Potassium

    C.

    Magnesium > Potassium > Gold > Zinc

    D.

    Zinc > Gold > Potassium > Magnesium

  2. 2.

    Which metal reacts vigorously with cold water to produce a metal hydroxide and hydrogen gas?

    A.

    Copper

    B.

    Lead

    C.

    Calcium

    D.

    Aluminum

  3. 3.

    A piece of zinc metal is placed into a test tube containing blue copper(II) sulfate solution. Which observation correctly describes the result of this reaction?

    A.

    The blue color of the solution fades and a brown solid forms.

    B.

    The solution turns purple and bubbles of hydrogen gas are evolved.

    C.

    The zinc dissolves but the solution remains a deep blue color.

    D.

    No reaction occurs because zinc is less reactive than copper.

Download the worksheet for Metals - Reactivity series to practice offline. It includes additional chapter-level practice questions.

Extraction of metals (Iron and Aluminum)

Subtopic

Extraction of metals (Iron and Aluminum) under Metals for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    During the extraction of aluminum, what product is formed at the cathode?

    A.

    Oxygen gas

    B.

    Carbon dioxide gas

    C.

    Molten aluminum metal

    D.

    Solid aluminum oxide

  2. 2.

    In the blast furnace, which substance acts as the main reducing agent that reduces iron(III) oxide to metallic iron?

    A.

    Carbon monoxide (COCO)

    B.

    Carbon dioxide (CO2CO_{2})

    C.

    Calcium oxide (CaOCaO)

    D.

    Oxygen (O2O_{2})

  3. 3.

    What is the primary function of cryolite (Na3AlF6Na_{3}AlF_{6}) in the electrolysis of aluminum oxide?

    A.

    To act as a catalyst for the reduction of aluminum ions

    B.

    To react with impurities like silicon dioxide

    C.

    To lower the melting point and improve the conductivity of the electrolyte

    D.

    To prevent the carbon anodes from burning away

Download the worksheet for Metals - Extraction of metals (Iron and Aluminum) to practice offline. It includes additional chapter-level practice questions.

Uses of metals and alloys

Subtopic

Uses of metals and alloys under Metals for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is a common use for mild steel?

    A.

    Cutlery and surgical instruments

    B.

    Car bodies and machinery

    C.

    Chemical plant vats

    D.

    Aircraft engines

  2. 2.

    Which metal is primarily used for electrical wiring due to its excellent electrical conductivity and ductility?

    A.

    Iron

    B.

    Lead

    C.

    Copper

    D.

    Silver

  3. 3.

    Brass is an alloy commonly used for musical instruments and decorative fittings. Which two metals are mixed to create brass?

    A.

    Copper and Zinc

    B.

    Copper and Tin

    C.

    Iron and Carbon

    D.

    Aluminum and Magnesium

Download the worksheet for Metals - Uses of metals and alloys to practice offline. It includes additional chapter-level practice questions.