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Chemistry Wilbraham Chapter 13 Flashcards | StudBud
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Chemistry Wilbraham Chapter 13
Chemistry Wilbraham Chapter 13
45 terms
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Answers
1
When a sample is heated up, the kinetic energy
dynamically transforms spontaneously into new chemicals
mmm... samples....
increases
decreases
2
What is the melting point at 30 atm?
-15°C
0°C
200°C
50°C
3
Silly putty flows. What state of matter is it?
liquid
solid
gas
I love chemistry.
4
gas to liquid
sublimation
boiling
condensation
deposition
5
Heat up a gas, and the absorbed energy gets
completely converted to potential energy
completely introverted
completely converted to kinetic energy
partially converted to potential and kinetic energy
6
What makes a particle evaporate?
temperature
pressure
kinetic energy
all of the above
7
Liquid to gas
condensation
sublimation
deposition
vaporization
8
Which of these is a phase?
solid quartz
all of the above
water vapor
liquid nitrogen
9
What is C?
triple point
solid
liquid
gas
10
How do you make a liquid evaporate faster?
You can't.
increase the pressure
increase the temperature
Stare at it very intensely.
11
What is at -15°C and 6 atm?
solid
liquid
triple point
gas
12
What is A?
triple point
gas
solid
liquid
13
Liquid to solid
freezing
deposition
sublimation
melting
14
Solid to liquid
melting
deposition
freezing
sublimation
15
What is at -15°C and 6 atm?
equilibrium between liquid and gas
equilibrium between solid and gas
equilibrium between solid and liquid
equilibrium between solid, liquid, and gas
16
What makes evaporation different from boiling?
the surface
vaporization
Gas to liquid
Liquid to gas
17
In a phase diagram, what do the lines mean?
the pressure and temperature
conditions where 2 or 3 phases are in equilibrium
conditions where 2 or 3 phases are in equilibrium pressure
what temperature it is
18
What phase is at 25°C and 30 atm?
liquid
solid
gas
triple point
19
A fluid is a substance that
causes the flu
flows
flays
flies
20
What is B?
triple point
solid
gas
liquid
21
What happens when if you start at 0°C and 6 atm, and then you increase the pressure to 25 atm?
melting
deposition
freezing
condensation
22
Collisions between gas particles are
perfectly elastic
nonexistent
perfectly inelastic
converting kinetic energy to potential energy
23
Altitudes below sea level have _________________ atmospheric pressure than at sea level.
the same
higher
lower
less dense
24
Water can boil at lower temperatures if
there is no water
ice is added
atmospheric pressure is higher
atmospheric pressure is lower
25
What phase is at -15°C and 30 atm?
triple point
liquid
solid
gas
26
What phase is at 50°C and 6 atm?
gas
triple point
solid
liquid
27
What is at 50°C and 30 atm?
equilibrium between solid, liquid, and gas
equilibrium between liquid and gas
equilibrium between solid and gas
equilibrium between solid and liquid
28
Gas particles move
all of the above
independently
far apart
rapidly
29
solid to gas
sublimation
deposition
freezing
melting
30
Gas pressure keeps a balloon inflated because of
a vacuum
gas particle collisions
atmospheric pressure
gravity
31
When you boil water, the stove keeps adding energy to the liquid. The liquid's temperature
depends on atmospheric pressure
goes up
stays the same
goes down
32
When a liquid evaporates, the temperature
stays the same
decreases
increases
Free lunch
33
101.3 kPa is equal to
100 atm
101.3 standard atmospheres (atm)
1 atm
760 atm
34
Gas to solid
vaporization
condensation
deposition
sublimation
35
What is the place where the 2 lines meet?
liquid
gas
solid
triple point
36
What is the most important difference between liquids and gases?
The intermolecular attractions between particles
The size of the particles
The kinetic energy of the particles
Motion of the particles
37
Does glass flow?
Yes
Maybe
Sometimes
No
38
States of matter are also called
elements
phases
countries
changes
39
Gas molecules are
small, hard spheres
more dense than liquid molecules
not moving in a closed container
small, soft spheres
40
Melting points of molecular solids tend to be _____________ melting points of ionic solids.
the same as
higher than
lower than
Studying is dumb.
41
Molecules always move unless
they're in a vacuum
the pressure is high enough
they're at 0 K
they're solid
42
A sample of graphite is brought to a temperature of 1 K. What's true?
All molecules are moving.
All molecules are motionless.
Most molecules are motionless.
Some molecules are motionless.
43
Melting points of ionic solids tend to be _____________ melting points of molecular solids.
higher than
lower than
the same as
This class is too hard.
44
Anything that flows is a
liquid
solid
fluid
gas
45
A sample of pure oxygen is brought to a temperature of 0 K. What's true?
All molecules are motionless.
Some molecules are motionless.
Most molecules are motionless.
All molecules are moving.
