Chemistry

9th -

10thgrade

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IGCSE Coordinated Chemistry Workout 18

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10 questions

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  • 1. Multiple Choice
    1 minute
    1 pt
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    An acid is added to an alkali until the final solution is just neutral. The reaction is exothermic.


    Which graph shows how the temperature changes as the acid is added to the alkali?

    A

    B

    C

    D

  • 2. Multiple Choice
    1 minute
    1 pt
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    The diagram represents the arrangement of atoms in a molecule of a compound.


    What is the molecular formula of the compound?

    CH2

    C3H6

    C3H8

    C6H3

  • 3. Multiple Choice
    1 minute
    1 pt
    Image

    Small amounts of barium chloride and sand are shaken with separate samples of water in two test-tubes. The test-tubes are left to stand for 24 hours.


    Which diagram shows how the test-tubes appear at the end?

    A

    B

    C

    D

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