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Phase Changes And Thermochemistry
Test Description: Chemistry Review
Instructions: Answer all questions to get your test result.
1) Which of the following best describes temperature?
A
energy of change
B
a measure of the average kinetic energy of all of the particles in a sample of matter
C
all of the above
D
heat absorbed or released in a chemical or physical change
2) Convert 94 degrees Celsius to Kelvin
A
367K
B
399K
C
179K
D
294K
3) The state of matter in which a material has neither a definite shape or definite volume is the
A
solid state
B
elemental state
C
liquid state
D
gaseous state
4) The compressibility of a liquid is generally
A
equal to that of a gas
B
more than that of a gas
C
less than that of a gas
D
zero
5) Particles within a solid
A
move randomly
B
do not move
C
vibrate in a fixed position
D
exchange positions easily
6) What is the process of a substance changing from a sold to gas vapor without passing through the liquid phase?
A
vaporization
B
deposition
C
sublimation
D
condensation
7) In a(n) ________ reaction, the products are at a higher energy level than the reactants
A
endothermic
B
exothermic
C
catalytic
D
activation
8) How many joules of heat are given off when 5.0 g of water cool from 75 degrees C to 25 degrees C? (specific heat of water = 4.18 j/g)
A
750
B
1500
C
1000
D
500
9) Matter that has a definite volume but no definite shape?
A
liquid
B
solid
C
gas
D
plasma
10) Matter that has no definite shape or volume and is a highly energized gas?
A
plasma
B
liquid
C
gas
D
solid
*select an answer for all questions
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