p1.2 - density Flashcards
1
Q
density
A
how much mass a substance has, per unit of its volume
2
Q
equation
A
density (kg/m^3) = mass (kg) / volume (m^3)
or g/cm^3
3
Q
how does density affect particles
A
more dense = more particles
4
Q
conservation of mass
A
applies when substances change state by melting, freezing, evaporating, condensing or sublimating
you have to add or remove material for the mass of a system to change.
particles do not appear or disappear