Energy, Heat And Temperature Flashcards
Totaly Energy
Remains the same
Energy is
Never created or destroyed, just is converted from one form to another
List some types of energy
Kinetic Potential Thermal Electrical Chemical Nuclear Solar Wind
Kinetic Energy
Movement
Potential Energy
Stored due to position
Thermal Energy
Heat
Chemical Energy
Stored in chemicals
All substances have their own
Specific heat
Specific Heat
The amount of energy it takes to raise the temperature of a kilogram of substance by a degree
More specific heat takes
More energy
Temperature
The average kinetic energy of the particles of a substance
Temperature is expressed in
K
F
C
Formula for K
K = C + 273
Formula for C
C = (F - 32)(5/9) C = K - 273
Formula for F
F = (C(9/5)) + 32
Heat
Energy that flows from higher temperatures to lower temperatures
When temperatures are the same,
There is no heat flow
Formula for total energy
Q = mcdeltaT
Exothermic
When a process releases heat
Endothermic
When a process absorbs heat
Examples of Exothermic
Burning gas
Condensing water
Examples of Endothermic
Melting ice
Evaporating water
Energy
The ability to do work or cause a change
Mechanical to Electrical
Spinning the wheels of a bike charges your phone
Electrical to mechanical
Electric fan
Electric car
Electrical to thermal
Toaster
Heater
Chemical to thermal
Hand warmer
Burning fuel like gasoline
Turning food in our bodies into energy to maintain our body heat
Hot tea
Particles move very fast
Iced tea
If frozen, the particles move very slowly, they only vibrate and they fall apart and melt
HEAT
Thermal energy that flows from a higher temperature to a lower temperature
Heat unit
J
Joules
Specific Heat unit
J/(kgC)
