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10 questions
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  • Q1

    In this type of reaction the original substances are recovered

    oxidation reaction

    physical change

    chemical change

    neutral reaction

    120s
  • Q2

    In this type of reaction a new substance is form

    unknown reaction

    chemical change

    physical reaction

    120s
  • Q3

    Evaporation of water from the surface of the road can be classified as

    drought

    drying out process

    chemical change

    physical change

    120s
  • Q4

    Baking soda reacts with vinegar(weak acid) forming bubbles and producing a gas. This type of change is

    physical change

    chemical change

    reversible

    mixing of chemicals

    120s
  • Q5

    The digestion of food by pets is a demonstration of

    odor change

    crushing change

    physical changes

    chemical changes

    120s
  • Q6

    Which of the indicators below does not reflect a chemical change

    change in smell

    change in shape

    heat given off

    gas forming

    120s
  • Q7

    During a lab activity two substances were mixed, the class observed loud popping sounds and vapors emerging. What type of change is mostly likely to occur?

    Chemical change

    Physical change

    reversible change

    heat change

    120s
  • Q8

    All the reactions below are physical changes except.

    blending apple slices

    baking biscuit

    freezing water 

    cutting cake

    120s
  • Q9

    All the reactions below can be classified as chemical change except

    rusting of nail

    shredding paper

    burning charcoal

    baking pancake

    120s
  • Q10

    The condensation of moisture in the atmosphere to form rain

    Chemical change

    cooling

    Evaporation

    Physical change

    120s

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