density and model of matter Flashcards
includes density, specific latent heat and gas pressure
describe a solid
the particles are all touching
they are only able to vibrate in place
they have the least internal energy
they have the strongest intermolecular forces
describe a liquid
the particles are only touching some other particles and they are able to flow over eachother
liquids have weaker intermolecular forces than solids
they have more energy than a solid
what is density
the mass per unit of volume
describe a gas
they have the weakest forces between particles
theyre able to move around freely
they are moving in a constant random motion
what is the formula for density
density (kg/m^3) = mass (Kg) / volume (m^3)
when will an object float?
when its density is lower than that of the liquid it is in
how do you measure mass
mass is measured on a mass balance
how to measure volume?
regular: l x w x h
irregular: using a displacement can and collecting the displaced water, which is equal to the volume
what is the density of water?
1g/cm3
1000kg/m3
what is the weight of one newton
1000 g or 1 kg
