Thermodynamics

Question 0

Extensive properties

Answer 0

Change is seen as amount of sample changes

Ex. Delta h delta s delta g and delta e

Question 1

State functions

Answer 1

An aspect of a chemical system

Pressure temp volume and number of atoms/mols

Question 2

Quantities are made intensive properties when we define

Answer 2

The temp, pressure, mass and physical state of the substance

Question 3

Standard state of a system

Answer 3

1 ATM, 25 degrees Celsius, 1 mole of compound

Question 4

Delta H^o
Delta S^o
Delta G^o
The ^o means that

Answer 4

The system is at standard state and they are intensive properties

Question 5

In a exothermic reaction delta h is

Answer 5

Negitive

Question 6

Kinetic energy KE is

Answer 6

The energy that matter possesses because of motion

Question 7

KE=

Answer 7

.5mv^2

Question 8

Potential energy

Answer 8

Stored energy that may be released under the appropriate conditions

Question 9

Specific heat of water

Answer 9

4.184J/g degrees celcius

Question 10

Specific heat

Answer 10

The amount of energy required to raise the temp of a substance 1 degree Celsius

Question 11

Dulong and Petit law

Answer 11

Specific heat X molar mass = 25J/mol*degrees Celsius

Question 12

Specific heat is a ________ physical property of all elements and can be used to _________

Answer 12

Intensive

Identify substances

Question 13

Heat energy (q) = 
(In terms of specific heat)

Answer 13

(Specific heat)(mass)(Delta T)

Question 14

q is expressed in (unit)

Answer 14

Joules

Question 15

First law of thermodynamics states

Answer 15

Energy is always conserved

Question 16

Delta E =

Answer 16

q + w
(Heat energy + work)
or
PEfinal - PEinitial
(Potential energy)

Question 17

q is positive in

Answer 17

Endothermic reactions

Question 18

w is positive when

Answer 18

Work Is done on the system

Question 19

w is negative when

Answer 19

Work is done by the system

Question 20

Work is equal to

In terms of pressure

Answer 20

-P* Delta V

Question 21

If volume increases in a system

Answer 21

Work is done by the system and w is negitive

Question 22

When volume decreases

Answer 22

Work is done on the system and w is positive

Question 23

Work is defined as

Answer 23

Force applied to an object as it moves a certain distance