Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Energy transfer occurs when... |
- Work is done by an object (on another object) - A temperature difference between two objects causes heat transfer |
Two things |
|
|
Define internal energy. |
The sum of the random distribution of the kinetic and potential energies of it's molecules. |
The sum of... |
|
|
Internal energy changes when: |
- Work is done on the object - Object is heated |
Two things |
|
|
Internal energy remains constant when: |
- No work is done - Energy in = energy out |
|
|
|
What is the first law of thermodynamics? |
The change of internal energy = total energy transfer due to work done and heating. |
|
|
|
Temperature rise depends on... |
- Object Mass - Energy supplied - Substance object is made out of |
3 things |
|
|
Define SHC |
The energy needed to raise 1 unit mass of a substance by 1K without change of state. |
|
|
|
Formula to find SHC from inversion tube. |
c = gLn/∆T |
|
|
|
What is Charles' law? |
V/T = constant |
|
|
|
Define gas pressure |
The force per unit area that gas exerts perpendicularly on a surface |
|
|
|
What is Boyles Law |
pV = Constant |
|
|
|
What's the pressure law? |
p/T = Constant |
|
|
|
How to calculate work done when volume of gas is changed? |
work done = p∆V |
|
|
|
How to work out mass of atom with Avogadro's number? |
Mass number / Avogadro's number |
|
|
|
What is one mole? |
The quantity of a substance that contains NA atoms. |
|
|
|
Define molar mass. |
Mass of one mole of the substance |
|
|
|
Number of moles in mass = |
Ms / M (Ms = mass) (M = Molar mass) |
|
