True of false?
Speed of reaction refers to how fast the reactants are used up in a reaction or how fast the products are formed in a reaction.
Speed of Reaction
Quiz
•
Chemistry
•
10th Grade
•
Medium
Lay Thio
Used 16+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
True of false?
Speed of reaction refers to how fast the reactants are used up in a reaction or how fast the products are formed in a reaction.
TRUE
FALSE
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
We can measure the speed of reaction by measuring the
mass of reactants remaining in a period of time
size of the solid reactant remaining
time taken for a reaction to be completed
volume of gas produced in a period of time
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which factors affect the speed of a reaction?
concentration
particle size
temperature
all of these
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An increase in temperature causes the reacting particles to ......
lose energy and move slower; hence decreasing frequency of effective collisions.
gain energy and move faster; hence increasing the frequency of effective collisions.
lose energy and move faster; hence increasing the frequency of effective collisions.
gain energy and move slower, hence decreasing the frequency of effective collisions.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does a lower concentration of reactant decrease the rate of reaction?
it decreases the number of particles per unit volume, hence decreases the frequency of effective collisions
it lowers the activation energy, hence decreases the frequency of effective collisions
it lowers the energy of the colliding particles, hence decreases the frequency of effective collisions
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When mixed with dilute acid, magnesium powder reacts faster than magnesium strip because
smaller particles have smaller surface area.
smaller particles have larger surface area.
small and large particles have the same surface area.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When pressure is increased, what happens to the particles of a gas?
The particles spread further apart and decreases the frequency of effective collisions.
The paricles spread further apart and increases the frequency of effective collisions.
The particles are forced closer together and increases the frequency of effective collisions.
The particles are forced closer together and decreases the frequency of effective collisions.
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