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Density
(of an object) its mass per unit volume
Density =
mass ÷ volume
ρ =
m ÷ V
Density is measured in...
kg/m³
Measure density of solid
- find mass with electronic balance
- find volume
Volume of regular object
use ruler to find length, width and depth and calculate volume
Volume of irregular object
thread it on a string a submerge it in water; measure the displacement
Eureka can
used to measure volume of irregular object
Mass of liquid [3]
- find mass of empty container
- add liquid
- find mass of container and water
Volume of liquid
measuring cylinder
Changes of state are...
physical changes
... stays the same during a change of state
temperature
Changes of state graph
Latent heat
the energy absorbed or released during a change in state
Internal energy
the sum of the kinetic (in relation to each other) and potential energies of all particles in the system
Internal energy does not include [2]:
- gravitational potential energy
- kinetic energy caused by motion of whole substance
Sublimation
solid to gas
Note 
Flashcard (59)