Thermo/States of Matter Flashcards
Thermal Conduction
The transfer of thermal energy when particles collide
Thermal Equilibrium
State in which the rates of thermal energy transfer between two objects are equal and the objects are at the same temperature
Specific Heat
Amount of energy needed to add to a material to raise the temperature of a unit mass by one temperature unit
Heat Engine
A device that is able to continuously convert thermal energy to mechanical energy
Heat
A transfer of thermal energy
Entropy
A measure of the dispersal of energy
Fluids
Materals that can flow and have no definite shape of their own
Plasma
A gas-like state of (-) charged electrons and (+) charged ions. Another state of matter
Where is plasma found?
Stars, lighting bolts, neon signs, and fluorescent bulbs
What is the heat equation
Q=mCdeltaT
What is the unit for Q
Joules
What is the unit for m
kg
What is the unit for C
J/kg x k
What is the unit for Delta T
Kelvin
What is the equation for pressure
P=Force/area
What is P written in
Pascals (Pa)
What is area written in
m^2
What is different between the heat of fusion and the heat of vaporization
Heat of Fusion is the transition between the freezing and melting point and Heat of Vaporization is the transition from liquid to vaporization and back
Convection
Heating caused by the motion of fluid in liquid or gas due to temperature differences (Oven)
Radiation
Transfer of energy through electromagnetic waves (Sun)
Conduction
Heat or electricity is directly transmitted through a substance when there is a difference in temperature. Travel through a medium
When was the first steam engine built
the 18th century
When does entropy increase
When there’s more heat (temp increase)
What happens to entropy in a system if thermal energy is removed
The temperature will decrease.
Name three things that use an internal combustion engine
Vehicles, boats, airplanes, trains
What is unit for heat, work, and energy
Joules