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Total questions: 20
Worksheet time: 1hrs 1mins
heat is defined as
a transfer of thermal energy
the total energy in all particles of an object
the average kinetic energy in all particles of an object
becoming more disordered as time passes
In a closed system, entropy always increases. This statement is known as ____.
0th law of thermodynamics
1st law of thermodynamics
2nd law of thermodynamics
3rd law of thermodynamics
In a closed system, energy cannot be created nor destroyed; it can only be transferred. This is known as _____.
0th law of thermodynamics
1st law of thermodynamics
2nd law of thermodynamics
3rd law of thermodynamics
Entropy is a measurement of how much order or disorder is in a closed system. The more _____; the _____ the entropy.
ordered; higher
disordered; higher
disordered; lower
What's the name of this equipment?
A polystyrene cup calorimeter
A white cup
A coffee cup
A bomb calorimeter
In the lab, we use a styrofoam cup calorimeter to create a _____.
closed system
open system
an environment to let energy flow freely
The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?
66.5 J
665 J
0.0266 J
0.665 J
62.5 C
The specific heat capacity (c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams of copper?
Which container has the greatest force between molecules to hold them together?
red
yellow
blue
Liquids with weaker forces between particles will
evaporate easily
Specific heat capacity (c) is the amount of energy needed to change 1 g of a substance by 1 degree Celsius. A substance with a high value of c most likely has a _____ force of attraction between its particles, whereas a substance with a low value of c most like has a _____ force of attraction between its particles.
strong; weak
weak; strong
same; same
Which one has less thermal energy? A pool of 25 deg.C water, a glass of 25 deg.C water, or a droplet of 25 deg.C water?
A pool
A glass
A droplet
If all substances are at 25 deg.Celsius, which one has the most amount of thermal energy in it?
solid water
liquid water
gaseous water
gold
In this picture, which way will energy flow?
From the air to the water
From the water to the air
From the ice cube to the air
From the ice cube to the water
Which of the following is the best description of conduction at microscopic level?
particles vibrate more violently as energy is added and neighboring particles start vibrating as well
particles vibrate more violently as energy is added and those particles jump from one end of the object to another end.
particles throughout the object all vibrate more violently at the same time.
As long as objects are above absolute zero or -273 deg. Celsius, they all emit ___.
radiation
light
long waves
love
In the Maxwell-Boltzmann distribution graph, the y-axis is ___ and the x-axis is ___. The area underneath the curve is the ___.
number of molecules; kinetic energy or speed of movement; Total number of particles
kinetic energy or speed of movement; number of molecules; Total number of particles.
Total number of particles; kinetic energy or speed of movement; number of molecules
30%
0.30%
0.23%
