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WorksheetsThermochemistry starter
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
The equation for heat transfer is ΔQ = m×c×ΔT What is represented by ΔQ ?
a)
heat, measured in calories
b)
mass, measured in grams
c)
specific heat, in calories/gram/degree C
d)
temperature change in degree C
2.
The S.I. unit for energy is
a)
calorie
b)
Kelvin
c)
grams
d)
joules
3.
Process in which energy is released from the system
a)
endothermic
b)
exothermic
4.
In an exothermic reaction:
a)
ΔH is positive because energy is gained
b)
ΔH is negative because energy is gained
c)
ΔH is positive because energy is lost
d)
ΔH is negative because energy is lost
5.
forming a bond
a)
endothermic
b)
exothermic
6.
What does this graph represent?
a)
Exothermic Reaction
b)
Endothermic Reaction
c)
Nuclear Reaction
d)
Radiation
7.
What is the ΔH of the reaction? The energy readings are top 103, middle 45 and bottom 10
a)
35 kJ
b)
- 35 kJ
c)
- 58 kJ
d)
58 kJ
8.
Temperature describes the ______________ of particles.
a)
volume
b)
mass
c)
motion
d)
conductivity
9.
If you flip the equation, ΔH……
a)
Stays the same
b)
Is divided by 2
c)
Is multiplied by 2
d)
Flips too
10.
Hess’s______
a)
Regulations
b)
Rule
c)
Principle
d)
Law
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