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Unit 6 Review

Quiz by Dieterle 2

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80 questions
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  • Q1
    Chemical equation
    An expression representing a chemical reaction
    30s
  • Q2
    Reactant
    Starting substance in a reaction
    30s
  • Q3
    Product
    Ending substance in a reaction
    30s
  • Q4
    Subscript
    Indicates # of atoms in a molecule
    30s
  • Q5
    Element symbol
    1 atom of 1 element
    30s
  • Q6
    Coefficient
    # to the left of a formula, assumed to be one "1" if not written
    30s
  • Q7
    Catalyst
    Substance that speeds up a chemical reaction without being used up; lowers the activation energy
    30s
  • Q8
    Precipitate
    A substance usually a solid which separates from a solution as a result of some physical or chemical change
    30s
  • Q9
    What should you never do the subscript of a correctly written formula
    Never change the subscript
    30s
  • Q10
    What is the reason you should never change the subscript of a correctly written formula?
    # of atoms in molecule is experimental
    30s
  • Q11
    When is a coefficient assumed to be "one"?
    If not otherwise written
    30s
  • Q12
    What does the coefficient show about the reactants and products?
    Molecular ratio
    30s
  • Q13
    Symbol for yields, produces
    --->
    30s
  • Q14
    Symbol for plus (combines with)
    +
    30s
  • Q15
    Symbol for reaction is reversible
    <---
    30s

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