WorksheetsCh 2 Sec 3/4 Quiz Review
Total questions: 45
Worksheet time: 26mins
Name
Class
Date
1.
A substance that increases speed of chemical reaction without being being changed is called:
a)
Catalyst
b)
Acid
c)
Base
d)
pressure
2.
Activation energy is required to start a chemical reaction. What is activation energy?
a)
The energy needed for a reaction to occur
b)
The minimum amount of energy needed for a reaction to potentially occur
c)
The energy added by a catalyst
d)
The energy possessed by the products
3.
Increase in temperature of the reactants can do one of the following
a)
Slow collision frequency
b)
Allow less effective collision between the particles
c)
Cause particles to lose speed
d)
Increase collision between the particles thus increasing the rate.
4.
The amount of a substance in a given volume.
a)
concentration
b)
temperature
c)
surface area
d)
catalyst
5.
Grinding an alka-seltzer tablet into powder increases the rate of reaction due to increased
a)
concentration
b)
surface area
c)
temperature
d)
reactants
6.
Increasing the concentration increases the speed of reaction by
a)
lowering activation energy
b)
increasing collisions
c)
speeding up the reactants
d)
exposing more reactant
7.
Which factors increase the rate of a reaction.
a)
increasing temperature
b)
increasing concentration
c)
increasing surface area
d)
all of these
8.
Which of the following slows down the rate of a chemical reaction?
a)
Place the reactants in hot water
b)
Place the products in ice bath
c)
Place the reactants in a ice bath
d)
Keep stirring the reactants with a stirring rod
9.
Rate of chemical reaction means
a)
amount of product formed
b)
speed of reaction
c)
concentration of reacting particles
d)
combining reactants with products
10.
To show how surface area affects rate of reaction you will use one of the following methods.
a)
Add catalyst
b)
Increase the temperature
c)
Decrease the pressure of reactants
d)
Finely divide the reacting substances
11.
Reactions that give out heat to the surrounding are classified as one of the following:
a)
Spontaneous
b)
Sluggish
c)
Exothermic
d)
Endothermic
12.
One of the signs of a chemical reaction taking place is:
a)
Bubbles are produced in the reacting vessel
b)
Reactants are not combining
c)
Products are not forming
d)
Colour is not changing
13.
A solution is heated and bubbles form. Do you assume a chemical reaction took place?
a)
Yes
b)
No
14.
You observe bubbles after adding metal to a solution. Do you assume a chemical reaction took place?
a)
Yes
b)
No
15.
Two clear and colorless solutions are combined within a test tube. The result is very cloudy. Do you assume a chemical reaction took place?
a)
Yes
b)
No
16.
Two clear and colorless solutions are combined within a test tube. The resulting solution is purple. Do you assume a chemical reaction took place?
a)
Yes
b)
No
17.
Metal is added to a solution in a test tube. The test tube now feels cooler. Do you assume a chemical reaction took place?
a)
Yes
b)
No
18.
A beaker containing a solution is heated. The beaker now feels warm. Do you assume a chemical reaction took place?
a)
Yes
b)
No
19.
What type of reaction is this?
a)
Endothermic
b)
Exothermic
20.
What type of reaction occurs in a hand warmer
a)
Exothermic
b)
Endothermic
21.
What is the purpose of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
22.
How do enzymes speed up chemical reaction?
a)
Increasing activation energy
b)
Decreasing activation energy
c)
Increasing deactivation energy
d)
Decreasing deactivation energy
23.
Reactions that absorb energy are called-
a)
endothermic
b)
exothermic
c)
mesothermic
d)
activation
24.
Reactions that release energy are called-
a)
activation
b)
endothermic
c)
mesothermic
d)
exothermic
25.
This chart shows what type of reaction?
a)
exothermic
b)
combustion
c)
endothermic
d)
mesothermic
26.
This chart shows what type of reaction?
a)
endothermic
b)
mesothermic
c)
exothermic
d)
hotothermic
27.
This speeds up chemical reactions in living cells.
a)
activist
b)
enzyme
c)
diamine
d)
solute
28.
This slows down or even stops a chemical reaction.
a)
de-activator
b)
catalyst
c)
enzyme
d)
inhibitor
29.
Which shows the activation energy required for this reaction?
a)
A
b)
B
c)
C
d)
D
30.
The activation energy required for a reaction with an inhibitor is __________ than the regular reaction
a)
higher
b)
lower
c)
neither
d)
both
31.
In an exothermic reaction, the initial energy is _______________ the final energy after the reaction
a)
lower than
b)
higher than
c)
the same as
32.
In an endothermic reaction, the initial energy is _______________ the final energy after the reaction
a)
lower than
b)
higher than
c)
the same as
33.
To measure the speed of a reaction you will use one of the following equipment.
a)
Petri dish
b)
Stop watch
c)
stirring rod
d)
Universal indicator
34.
Another term for burning is
a)
Fire triangle
b)
Magnesium oxide
c)
Combustion
d)
Bustion
35.
8.7: Combustion is when a __________ reacts with oxygen
a)
petrol
b)
fuel
c)
fire triangle
d)
carbon dioxide
36.
Which of these isn't in the fire triangle?
a)
Fuel
b)
Heat
c)
Oxygen
d)
Carbon dioxide
37.
What part of the fire triangle do you remove by spraying water onto a fire?
a)
Heat
b)
Oxygen
c)
Fuel
38.
How often should I test my smoke detector?
a)
Once a year
b)
Every six months
c)
Once a month
d)
Once every two years
39.
When it comes to a kitchen grease fire what should you NOT use to extinguish it
a)
Pan lid
b)
Baking soda
c)
Class K extinguisher
d)
Water
40.
When putting out a fire you are to move ___________?
a)
Backward away from fire
b)
Forward as you are putting out the fire
c)
Around the fire
d)
To the right
41.
When using the fire extinguisher you are to start at the ____________ of the fire?
a)
Top and work down
b)
To the left
c)
To the right
d)
Base
42.
What are the three parts of The Fire Triangle?
a)
fuel, nitrogen, and heat
b)
heat, coal, and water
c)
combustion, fuel, and coal
d)
fuel, oxygen, and heat
43.
This is a common fire extinguisher you see in most facilities. What does this extinguisher contain to aid in putting out a fire?
a)
Water
b)
CO2
c)
Dry Ice
d)
Dry Chemicals
44.
What are the three parts of The Fire Triangle?
a)
fuel, nitrogen, and heat
b)
heat, coal, and water
c)
combustion, fuel, and coal
d)
fuel, oxygen, and heat
45.
What does activation energy have to do with chemical reactions?
a)
The mass of the reactants and products is the activation energy
b)
All chemical reactions need some activation energy to begin
c)
Activation energy is the energy after the reaction has occurred
d)
Activation energy has nothing to do with chemical reactions
100 %
