Ch. 6 - Thermochemistry Flashcards
0
Q
Energy
A
- the capacity to do work
1
Q
Thermochemistry
A
- the study of the relationships between chemistry and energy
2
Q
Work
A
- the result of a force acting through a distance
3
Q
Heat
A
- the flow of energy caused by a temperature difference
4
Q
Kinetic Energy
A
- the energy associated with the motion of an object
5
Q
Thermal Energy
A
- the energy associated with the temperature of an object
6
Q
Potential Energy
A
- the energy associated with the position or composition of an object
7
Q
Chemical Energy
A
- the energy associated with the relative positions of electrons and nuclei in atoms and molecules
8
Q
The Law of Conservation of Energy
A
- energy can be neither created nor destroyed
- energy can be transferred from one object to another
- it can assume different forms
9
Q
System
A
- where the transfer of energy occurs
10
Q
Surroundings
A
- everything with which the system can exchange energy
11
Q
Joule (J)
A
- the SI unit of energy
- 1 joule is a relatively small amount of energy
kg✖m^2➗s^2
kg = SI unit of mass m➗s = SI unit of velocity
12
Q
Kilojoule (kJ)
A
1 kJ = 1000 J
13
Q
calorie (cal)
A
- the amount of energy required to raise the temperature of 1g of water by 1°C
- 1 cal = 4.184 J (exact)
- a calorie is a larger unit than a Joule
14
Q
Kilowatt-Hour (kWh)
A
- a larger energy unit
- 1 kWh = 3.60✖10^6
