WorksheetsThermodynamics Pre-Assessment
Total questions: 16
Worksheet time: 3hrs 22mins
I understand the value of learning thermodynamics and how I can use it in my engineering career
No, it's just a class I need to pass
I'm unsure
I understand why thermo is important but I will probably not use it much in my life
I understand the value and plan to use thermodynamics extensively in my life
"Conservation of Energy" is another name for
Which of the following is true of an exothermic process?
Energy is released; ΔH is negative; Going from Gas to Liquid, Liquid to Solid
Energy is absorbed; ΔH is positive; Going from Gas to Liquid, Liquid to Solid
Energy is released; ΔH is positive; Going from Solid to Liquid, Liquid to Gas
Energy is absorbed; ΔH is negative; Going from Gas to Liquid, Liquid to Solid
How much energy is needed to raise the temperature of a 20.0g piece of copper from 15.0 degrees Celsius to 25.0 degrees Celsius? (The specific heat of copper is 0.385 J/g C)
20 X (25-15) = 200 J
20 X .385 X (25-15)= 77 J
20 X .385 X (15-0)= 115.5 J
Specific heat is defined as:
The amount of energy it takes to raise one gram of a substance by one degree Celsius
The internal energy of an object
The measure of the kinetic energy of an object's molecules
The kinetic energy of a 1000 kg car travelling 15 m/s is:
1000 * 15 = 15000 J
1/2 * 1000 * 152 = 112.5 kJ
15 * 10002 = 15 MJ
To freeze water …
energy must be added to the water
energy must be removed from the water
Entropy relates to disorder, the unusable energy that escapes a system.
What s the potential energy of 2 kg a rock thrown 5 meters into the air?
9.8 * 2 = 19.6 J
2 * 5 = 10 J
1/2 * 2 * 52 = 25 J
2 * 9.8 * 5 = 98 J
Which is an example of decreasing entropy in a system?
Boiling water
Freezing water
Ice melting
A reaction has both positive ∆S° and ∆H° values. From this information alone, you can conclude that the reaction
can be spontaneous at any temperature.
cannot be spontaneous at high temperatures.
can be spontaneous only at low temperatures.
can be spontaneous only at high temperatures.
I feel like I belong in this course and I am prepared for the challenge
No, I'm nervous
So so
I'm gonna crush it!
When it comes to this class, what are you most concerned about?
Is there anything that you would like me to know about you before we really get into the class? (e.g. colorblind, hard of hearing, english second language...)
Do you feel comfortable coming to office hours or reaching out when you feel like you need help?
I sometimes feel intimidated by office hours or professors so I tend not to attend
I will go to office hours only if I really need the help as a last resort. I prefer to work alone or with friends
I have no issue going to office hours or reaching out
