particle model of matter Flashcards
(8 cards)
1
Q
How are particles laid out in a solid?
A
Tightly packed, organised, touching rows
2
Q
How are particles laid out in a liquid?
A
Tightly packed but free to move past each other
3
Q
How are particles laid out in a gas?
A
particles are spread out and move randomly
4
Q
What is density?
A
Density describes how closely packed the particles are
5
Q
Is mass gained or lost during state changes?
A
TRICK QUESTION HO
its conserved so its the same xx
6
Q
What is internal energy?
A
The total kinetic and potential energy
7
Q
What happens to a material when it is heated/cooled?
A
Intermolecular forces strengthen/weaken which changes the potential energy of a substance
8
Q
A
