pper 1 Memorise Flashcards
(4 cards)
1
Q
what can the particle model can be used to explain
A
- the different states of matter
- differences in density.
2
Q
what types of changes are state changes?
A
they are physical changes not chemical so if we reverse the change the material recovers its original properties
3
Q
how do you find the total internal energy of a system?
A
the total kinetic energy and potential energy of all the particles (atoms and molecules) that make up a system
4
Q
A
