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Unit 8 Review

Quiz by Jennifer Davis

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9 questions
Show answers
  • Q1
    What happens to the reactants of a chemical reaction
    some atoms are lost to the reaction
    the atoms are changed to new elements
    the atoms are moved and re-bonded to form the products
    the atoms have new identities and chemical properties
    60s
  • Q2
    What is the coefficient represents
    The number added to both elements
    The number of the second element
    The number of the first element
    The number of molecules
    60s
  • Q3
    When a combustion reaction occurs what is always present?
    Carbon + Oxygen ---> Carbon Dioxide + Water
    Fire
    Hydrocarbon + Oxygen --> Carbon dioxide + water
    Hydrocarbon + Oxygen ---> smoke + ash
    60s
  • Q4
    In a synthesis reaction how many products are there?
    1
    3
    2
    0
    60s
  • Q5
    When an Acid/Base Reaction occurs what are the products?
    A salt and water
    Water and a covalent compound
    HCl
    NaOH
    60s
  • Q6
    The oxidation number of any element in a compound is equal to?
    It's atomic number
    It's charge
    It's mass
    the subscript
    60s
  • Q7
    What type of reaction is NEVER a redox reaction?
    Double Replacement
    Decomposition
    Synthesis
    Combustion
    60s
  • Q8
    What type of reaction has an element and a compound as both reactants and products?
    Double Replacement
    Synthesis
    Single Replacement
    Decomposition
    60s
  • Q9
    A precipitation reaction looks like?
    (aq) + (s) --> (aq) + (aq)
    (aq) + (aq) --> (l) + (aq)
    (aq) + (aq) --> (s) + (aq)
    (aq) + (aq) --> (aq) + (g)
    60s

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