Internal energy Flashcards
1
Q
What is internal energy of a system
A
The total energy that its particles have in their kinetic and potential energy store
2
Q
Heating a system leads to a change in what?
A
change in temperature or a change in state
3
Q
If the temperature changes the size of the change depends on what?
A
mass of the substance,what its made of,its specific heat capacity,and the energy input
4
Q
A change in state occurs only if the susbtance is
A
Heated enough so the particles have enough energy to break the bonds
5
Q
is a change of state a physical change or chemical change
A
physical change as it is the same substance just in a different way
6
Q
During a change of state do the number of particles change
A
No they are just arranged differently.This means the mass is conserved
