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Quiz 4.02 Types of Reactions Review

Quiz by Laurie Clements

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19 questions
Show answers
  • Q1
    Which of the following is an example of a chemical change?
    using magnesium to displace hydrogen gas from water
    melting a stick of butter
    dissolving salt in water
    30s
  • Q2
    Consider the chemical equation CH4 + 2 O2 → CO2 + 2 H2O. In this equation, CH4 is a
    reactant
    product
    displacement
    30s
  • Q3
    Consider the equation 4 Fe+3 O2 → 2 Fe2O3 . In this equation, 3 O2 is a
    reactant
    compound
    product
    30s
  • Q4
    Which of the following is an example of a physical change to matter?
    rusting
    digestion
    freezing
    30s
  • Q5
    What is a difference between a physical and a chemical change?
    Physical changes always form a new substance and chemical changes always involve a change in the state of matter.
    Chemical changes always include a fire and physical changes always include water
    A physical change does not involve the creation of any new substances and a chemical change does involve the creation or formation of a new substance.
    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?
    decomposition
    exothermic
    endothermic
    30s
  • Q7
    During an endothermic reaction, what happens to energy in relation to the surroundings?
    mixed with
    absorbed from
    released to
    30s
  • Q8
    During an exothermic reaction, what happens to energy in relation to the surroundings?
    released to
    mixed with
    absorbed from
    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?
    synthesis
    decomposition
    double displacement
    single displacement
    30s
  • Q11
    In what type of reaction does a complex substance break down into simpler substances?
    double displacement
    decomposition
    single displacement
    synthesis
    30s
  • Q12
    In what type of reaction does a single uncombined element replace another element in a compound?
    single displacement
    synthesis
    decomposition
    double displacement
    30s
  • Q13
    In what type of reaction do the parts of two compounds switch places to form two new compounds?
    synthesis
    double displacment
    single displacement
    decomposition
    30s
  • Q14
    Which generalized equation represents a synthesis reaction?
    AC +BD → AD + BC
    A + BC → AC+ B
    A + B → AB
    AB → A + B
    30s
  • Q15
    Which generalized equation represents a decomposition reaction?
    A + B → AB
    A +BC → AC+ B
    AB →A + B
    AD +BC → AC+ BD
    30s

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