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Chapter 9

Heat flows from: cold to hot or hot to cold? hot to cold
TE total energy
Thermal energy is the _______ of all the kinetic energies of its particles. sum
__________ ____________ can only be measured as it is transferred from one system to another thermal energy
When molecules start moving more they are gaining what? kinetic energy
Transferring particle kinetic energy, he motion, is called heating or cooling
The temperature of an object is directly related to the __________ kinetic energy of its atoms and molecules. AVERAGE
The fiducial points are the freezing point and boiling point of water
What is the advantage of the Kelvin scale there are no negative values
When particles gain energy and can move away from each other causing the object to gain volume thermal expansion
__________increases with increasing temperature b/c electrons move more randomly electrical resistence
The measure of the resistance of liquids to flow Viscosity
Heat the quantity of thermal energy that flows from one place to another
Conduction touches
Convection through fluids
Radiation radiates
The higher the temperature, the _______ electromagnetic energy more
Can radiant energy transfer between two objects that aren't touching? yes
Radiant energy does ____ ____ ___________ to move between systems not use matter
Does thermal energy need matter to move? yes
Insulators are materials that....? resist the flow of energy
The relationship btwn the amount of thermal energy absorbed and the temperature change caused by this heat capacity
The amount of thermal energy that must be gained or lost to change the temperature of 1g of substance specific heat
Latent heat of fusion the amount of thermal energy exchanged per gram of material during melting or freezing
Latent heat of vaporization the amount of heat it takes to change a liquid into a gas
TRIPLE POINT the temperature and pressure at which the solid liquid and gas phases exist at the same time
the temperature above which a substance will always be a gas regardless of the pressure critical point
Created by: laurelyno