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Week 16 Reaction Rate
Test Description: Rate of Chemical Reactions
Instructions: Answer all questions to get your test result.
1) Which one of the following is NOT a factor that affects the speed of reactions?
A
state of reactants
B
surface area
C
concentration of reactants
D
temperature
2) For ______ reactions to take place the reactants must hit one another with enough energy
A
solo
B
chemical
C
physical
D
chain
3) When liquid or gas reactants are crowded close together we say they are ______.
A
dilute
B
aligned
C
spaced
D
concentrated
4) Concentrated reactants produce _____ reactions.
A
miniature
B
slower
C
faster
D
no
5) When reactants move _____, they hit with more force, which speeds up the reaction.
A
faster
B
slower
C
north
D
south
6) When _____ reactants are crowded close together only those on the surface can come in contact with the other reactants.
A
metal
B
solid
C
liquid
D
gas
7) A _______ is a chemical that speeds up a reaction but is not part of the reaction.
A
metalloid
B
catalyst
C
nonmetal
D
concentrate
8) If the reactants are spaced far apart, we say they are _____ (the opposite of concentrated).
A
thick
B
dense
C
dilute
D
condensed
9) Reactions with dilute reactants are _____.
A
warmer
B
slower
C
faster
D
colder
10) Which of these does NOT speed up a chemical reaction?
A
concentrated reactants
B
smaller surface area of solids
C
reactions with a catalyst
D
reactions at higher temperatures
*select an answer for all questions
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