elastic collision
Remains the same
-- Temperature is the direct observation of the average kinetic energy of themolecules in the substance.-- If the tub of water and cup of water have the same temperature, then theaverage kinetic energy of the molecules in each one must be the same.-- The tub full of molecules needs more total energy than the cup of molecules does,in order to average the same for each molecule.
Physical Change-- Same amount of energy, but in different form Chemical Change-- Different amount of energy, and in a different form
The total number of atoms of the reactants should be equal to the total number of atoms of the products. The total number of molecules of the reactants should be equal to the total numbers of molecules of the products
The total kinetic energy of molecules must remain constant during changes of phase.
The total kinetic and potential energy of the molecules of an object is thermal energy.
related to the motion of molecules
internal energy
internal energy
Inelastic
Temperature is the measure of average kinetic energy of all the atoms and molecules in an object
THERMAL ENERGY
THERMAL ENERGY
THERMAL ENERGY
The total amount of energy doesn't change in this case.
Temperature is a number that is related to the average kinetic energy of the molecules of a substance. If temperature is measured in Kelvin degrees, then this number is directly proportional to the average kinetic energy of the molecules. This differentiates it from *heat,* a different term, which is a measurement of the total energy in a substance. That total energy is made up of not only of the kinetic energies of the molecules of the substance, but total energy is also made up of the potential energies of the molecules. As temperature increases, kinetic energy increases (which makes sense, if you're putting more energy into a system, you're probably going to have more total energy).
This is called an elastic collision. In this case both momentum and kinetic energy is conserved.