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4.02 Quiz: Types of Reactions

Quiz by Laurie Clements

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19 questions
Show answers
  • Q1
    What is a physical change?
    A change where one or more substances called reactants combine or break down to form new substances called products.
    A change does not involve the production of any new substances. It only changes the shape, size or state of a sample of matter.
    A change that involves the production of new substances.
    30s
  • Q2
    Which of the following is an example of a chemical change?
    freezing water into ice
    melting a stick of butter
    dissolving salt water
    using magnesium to displace hydrogen gas from water
    30s
  • Q3
    Consider the chemical equation CH4 + 2 O2 → CO2 + 2 H2O. In this equation, CH4 is a
    displacement
    reactant
    product
    30s
  • Q4
    Consider the equation 4 Fe+3 O2 → 2 Fe2O3 . In this equation, 3 O2 is a
    compound
    product
    reactant
    30s
  • Q5
    Which of the following is an example of a physical change to matter?
    digestion
    rusting
    freezing
    30s
  • Q6
    Photosynthesis is a chemical reaction that involves the production of glucose (sugar) from carbon dioxide and water in the presence of sunlight. Photosynthesis is what kind of reaction?
    endothermic
    single displacement
    decomposition
    exothermic
    30s
  • Q7
    During an endothermic reaction, what happens to energy in relation to the surroundings?
    absorbed from
    released to
    mixed with
    30s
  • Q8
    During an exothermic reaction, energy is _______ the surroundings.
    mixed with
    absorbed from
    released to
    30s
  • Q9
    In a cold pack, which type of reaction draws heat from the surroundings?
    exergonic
    endothermic
    exothermic
    30s
  • Q10
    In what type of reaction do two or more reactants combine to form a product?
    single displacement
    decomposition
    synthesis
    double displacement
    30s
  • Q11
    In what type of reaction does a complex substance break down into simpler substances?
    single displacement
    decomposition
    synthesis
    double displacement
    30s
  • Q12
    In what type of reaction does a single uncombined element replace another element in a compound?
    synthesis
    double displacement
    decomposition
    single displacement
    30s
  • Q13
    In what type of reaction do the parts of two compounds switch places to form two new compounds?
    synthesis
    single displacement
    double displacement
    decomposition
    30s
  • Q14
    Which generalized equation represents a synthesis reaction?
    AB → A + B
    A +BC → AC+ B
    A + B → AB
    A + BC → AC+ B
    30s
  • Q15
    Which generalized equation represents a decomposition reaction?
    A + B → AB
    AB →A + B
    A +BC → AC+ B
    30s

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