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WorksheetsThermo and nuclear chem test
Total questions: 32
Worksheet time: 1hrs 6mins
Name
Class
Date
1.
Heat is measured in
a)
joules
b)
grams
c)
degrees celcius
2.
q stands for which variable
a)
heat
b)
mass
c)
specific heat
d)
change in temperature
3.
The variable C stands for what
a)
heat
b)
mass
c)
specific heat
d)
change in temperature
4.
Temperature is a measure of the average kinetic energy of the particles in a sample of matter
a)
True
b)
False
5.
What would be the effect on the particles if more heat is supplied to the system?
a)
They would slow down
b)
They would stop moving
c)
They would speed up
d)
There would be no effect
6.
A process that releases heat to its surroundings
a)
endothermic
b)
exothermic
c)
radiation
d)
heat transfer
7.
124 joules of heat are added to a piece of lead (specific heat = 0.128 J/goC). It is heated to 100.0oC, and then lowered into a calorimeter filled with water. The lead’s temperature decreases to 28.8oC. What is the mass?
a)
150 g
b)
13.6 g
c)
4 g
d)
1130 g
8.
What is the specific heat capacity of silver metal if 55 grams of the metal absorbs 47.3 joules of heat and the temperature rises 15 degrees Celcius?
a)
0.033 J/g°C
b)
0.057 J/g°C
c)
39000 J/g°C
d)
.0455 J/g°C
9.
What type of reaction is pictured here?
a)
endothermic
b)
exothermic
10.
What type of reaction is pictured here?
a)
exothermic
b)
endothermic
11.
As a reaction is taken place, the student notices that the temperature has dropped. This indicates that the system has increased in energy. What type of process is this?
a)
Endothermic
b)
Exothermic
12.
What is the specific heat of a substance that absorbs 2500 joules of heat when a sample of 100 g of the substance increases in temperature from 10 °C to 70°C?
a)
485 J/g °C
b)
-0.417 J/g °C
c)
-485 J/g °C
d)
0.417 J/g °C
13.
What is the definition for specific heat?
a)
4.184 J/g°C
b)
the amount of energy it takes to raise 1 g of an element 1°C
c)
the energy required to change a substance from a solid to a liquid
d)
the amount of energy it takes to cool of a substance
14.
Alpha particles have a _____ charge.
a)
+2
b)
0
c)
+1
d)
-1
15.
The time required for half of a sample of a radioactive substance to undergo nuclear decay is called __________.
a)
Decay Time
b)
Half Life
c)
Atoms don't decay
d)
Isotope time
16.
Which produces more energy--nuclear fission or nuclear fusion?
a)
Fusion
b)
Fission
c)
They produce the same amount
d)
It depends on the elements used
17.
When one large nucleus is split into two smaller nuclei, the process is nuclear _____.
a)
Fusion
b)
Fission
c)
Tracing
d)
Decay
18.
Two or more nuclei combine to form one larger nucleus in the process of nuclear _____.
a)
Fusion
b)
Fission
c)
Tracing
d)
Decay
19.
Beta particles have a _____ charge
a)
+1
b)
0
c)
-1
d)
+2
20.
_________ happens naturally due to an unstable nucleus.
a)
fission
b)
fusion
c)
radioactive decay
d)
K-capture
21.
What is a benefit of nuclear fission?
a)
The ability to absorb energy
b)
The ability to release tremendous amounts of energy
c)
The ability to produce more energy than nuclear fusion
d)
There are no beneficial aspects of nuclear fission
22.
An example of an uncontrolled fission reaction is _______________
a)
Nuclear power plants
b)
Radio active decay
c)
Atomic Bomb
d)
On the surface of the sun
23.
During beta decay, a nucleus ....
a)
gives up two protons and two neutrons.
b)
maintains the same number of protons and neutrons.
c)
loses a proton and gains a neutron.
d)
gains a proton and loses a neutron.
24.
The most penetrating type of radiation is the ____.
a)
alpha particle
b)
gamma ray
c)
beta particle
d)
uranium
25.
The type of radioactive particle that can be stopped by a sheet of paper is the ____.
a)
alpha particle
b)
beta particle
c)
gamma ray
d)
uranium
26.
The three types of nuclear radiation in increasing order of penetrating power are ____.
a)
alpha, beta, gamma
b)
X ray, beta, gamma
c)
alpha, gamma, beta
d)
X ray, gamma, beta
27.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma
d)
none
28.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
29.
On a hot summer day, a student jumps in a pool to freshen up. Which of the following is the best explanation of why the student felt much better as soon as he jumped in the water?
a)
The heat of the pool is transferred to the student making the water of the pool cooler
b)
The heat of the student is transferred to the pool making the water of the pool warmer
c)
The heat of the student is conserved and not transferred
d)
The heat of the pool is conserved and not transferred
30.
A group of friends gather around a fire to stay warm.
a)
conduction
b)
convection
c)
radiation
31.
The specific heat of aluminum is 0.21 J/g°C. How much heat is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?
a)
105 J
b)
10.5 J
c)
1.05 J
32.
The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change when 100 Joules of heat is added to 20 grams?
a)
12.82 °C
b)
24.12°C
c)
351 °C
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