Unit Test — Unit test Answers
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Which symbol can be used to indicate a chemical reaction that takes place in the presence of a catalyst?
A
350 degrees Celsius over a right-pointing arrow.
B
Upper P t over a right-pointing arrow.
C
0.5 a t m over a right arrow.
D
Delta over a right arrow.
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Consider the reaction.When does the given chemical system reach dynamic equilibrium?
A
when the forward and reverse reactions stopB
when the rate of the forward reaction is higher than the rate of the reverse reactionC
when the concentration of the reactants is higher than the concentration of the productsD
when the rates of the forward and reverse reactions are equal23
Which characteristic best identifies a decomposition reaction?
A
a single compound as a reactantB
a single compound as a productC
an element and a compound as reactantsD
an element and a compound as products24
Which type of reaction is represented by the generic equation AB + CD AD + CB?
A
combustionB
decompositionC
single replacementD
double replacement25
Ben observes how quickly some dry wood is burning in a campfire. Which term best relates to Ben’s observation?
A
reaction rateB
activation energyC
collision theoryD
spontaneous reactionDid you find these answers helpful?
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