chapter 6- molecules and matter Flashcards
1
Q
what is the equation for density?
A
density= mass(kg) / volume (m^3)
2
Q
what can float in water?
A
objects’ that density is less then the volume of water
3
Q
what can increase internal energy?
A
the temperature increasing
4
Q
latent heat energy is….
A
… the energy needed for the substance to change state without changing the temprature
5
Q
the equation for energy is….
A
… energy= mass * length
6
Q
why does a balloon keep it’s shape?
A
Because of the pressure created between the collisions inside
7
Q
if you have double the pressure there is…
A
… double the volume
8
Q
Specific latent heat=
A
Energy / mass
9
Q
The freezing point of a substance is the same as it’s…
A
Crystallisation point
10
Q
What is gas pressure caused by?
A
The molecules hitting the walls
