Particle Model of Matter Flashcards
Equation:
Density
ρ = m/v
Required Practical:
Density
Solid:
1) Use a balance to measure the mass
2) If it’s a regular solid, measure its length width and height then calculate the volume.
3) If irregular, submerge it in a eureka can filled with water. The water displaced by the solid will be transferred to the measuring cylinder
4) Record the volume of water in the measuring cylinder, this is the volume of the solid.
5) Plug in the object’s mass and volume into the density formula to find the density
Liquid:
1) Place a measuring cylinder on a balance and zero the balance
2) Pour 10ml of the liquid into the measuring cylinder, repeating the process until the cylinder is full and recording the total volume and mass each time
4) For each measurement, use the formula to find the density (1ml = 1cm²)
5) Finally, take an average of your calculated densities. This will give you a value for the density of the liquid
Describe:
Change of State
Mass is conserved
Solid > Gas = Sublimating
Solid > Liquid = Melting
Liquid > Solid = Freezing
Liquid > Gas = Evaporating
Gas > Liquid = Condensing
Define:
Specific Latent Heat
The energy required for 1kg of a substance to change state
Equation:
Specific Latent Heat
E = mL
(Energy = mass * Latent Heat)
Describe:
Pressure and Volume relationship
pV = Constant
Pressure is inversely proportional to Volume
