WorksheetsThermochemistry
Total questions: 21
Worksheet time: 14mins
Name
Class
Date
1.
Amount of energy required to increase the temperatureof 1 g of water by 1"C
a)
calorie
b)
joule
c)
Calorie
d)
kcal
2.
Device that accurately measures energy changes during a chemical process.
a)
thermometer
b)
calorimeter
c)
barometer
d)
anemometer
3.
Energy stored in a substance because of its composition
a)
kinetic energy
b)
potential energy
c)
thermal energy
d)
chemical energy
4.
Phase change from gas to liquid
a)
sublimation
b)
condensation
c)
vaporization
d)
freezing
5.
Heat transfer through direct contact
a)
conduction
b)
convection
c)
radiation
d)
thermal
6.
Heat transfer through liquids or gases
a)
conduction
b)
convection
c)
radiation
d)
thermal
7.
The point at which all 3 phases of matter exist
a)
triple point
b)
critical point
c)
phase change
d)
solubility
8.
The temperature and pressure where 2 phases of substance are indistinguishable from each other
a)
triple point
b)
critical point
c)
pressure point
d)
kelvin point
9.
Phase change from solid to gas
a)
endothermic
b)
exothermic
10.
Amount of energy required to increase the temperature of 1 g of a substance by 1'C
a)
joules
b)
specific heat
c)
Calorie
d)
calorie
11.
What type of heat transfer is shown in this picture?
a)
radiation
b)
convection
c)
conduction
d)
solar
12.
What type of heat transfer is shown in the picture?
a)
radiation
b)
conduction
c)
convection
13.
Phase change from solid to liquid
a)
melting
b)
condensation
c)
vaporization
d)
sublimation
14.
Phase change from liquid to solid
a)
vaporization
b)
condensation
c)
freezing
d)
heat of fusion
15.
A process that releases heat to its surroundings
a)
endothermic
b)
exothermic
c)
radiation
d)
heat transfer
16.
What type of reaction is shown in the picture?
a)
endothermic
b)
exothermic
c)
potential energy
d)
kinetic energy
17.
If there is an increase in H, why would this reaction feel cold to your hand?
a)
energy is absorbed from surroundings
b)
energy is released into surroundings
c)
heat moves from colder to warmer objects
d)
it would not feel colder
18.
What type of phase change is shown in the picture?
a)
sublimation
b)
deposition
c)
freezing
d)
melting
19.
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
20.
Will H be positive or negative in this reaction?
a)
positive
b)
negative
21.
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/gC
b)
0.057 J/gC
c)
39000 J/gC
d)
.0455 J/gC
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