MAjor points and concepts
Energy- what is required for movement
exothermic- gives off heat
thermodynamics- the study of how energy flows
energy units:
entropy- the measure of disorder in the universe
Alternative Energy Sources:
Solar energy:
- potential- stored
- kinetic- motion
- chemical potential- propane, octane
- energy cannot be created or destroyed
- it can be transferred from one form to another
- in order to work, you must move
- based on the effects around the environment
- measures kinetic energy
- high to low
exothermic- gives off heat
thermodynamics- the study of how energy flows
energy units:
- joule
- calorie
- the energy of the universe is constant
- the disorder of the universe is always increasing
entropy- the measure of disorder in the universe
Alternative Energy Sources:
Solar energy:
Wind energy
Hydroelectric energy
example calculations
Hess's Law
If you added 1.1x10^4 J to 120 g of water, what is the temperature change of water? (Cp of H2O = 4.184 J/g °C)
If a sample of chloroform is initially at 25°C, what is its final temperature if 150.0 g of chloroform absorbs 1.0 kilojoules of heat, and the specific heat of chloroform is 0.96 J/g°C