C3:Particle model of matter Flashcards
how do you calculate density (kg/m^3)
mass(kg) / volume(m^3)
How do you find the density of an irregul\r shape
step 1: put object onto the balance and record the mass
step 2:fill up a eureka can with water
step 4:put object inside of the eureka can and measure the displaced water in the measuring cylinder.
what is a system
an object or a group of objects
what is internal energy
the sum of kinetic and potential energy of all the particles that make up the system
how do you calculate na change in temperature (j)
mass x specific heat capacity(j/kg celsius) x temperature change (celsius)
what is specific heat capacity
amount of energy required to raise the temperature of one kg pf the substance by one degree celsius
what is latent heat
energy needed for a substance to change state
how do you calculate energy for a change of state (j)
mass x specific latent heat(j/kg)
what is internal energy
sum of kinetic energy and potential energy of all particles in a substance
how do you calculate latent heat (j)
mass(kg) x specififc latent heat (j/kg)
what happens when you heat up a gas
increase particles kenetic energy which means they collide more frequently and with greater force
this causes an increase i pressure
