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