Please enable JavaScript.
Coggle requires JavaScript to display documents.
Physics - Particle Model of Matter (1) - Coggle Diagram
Physics - Particle Model of Matter (1)
Specific Heat Capacity
Heat
total thermal energy
Temperature
what is measured
thermometer
amount of energy required to heat 1kg by 1 degree C
Change in energy = mass x SHC x change in temperature
ΔE = mcΔθ
PRACTICAL
block of solid material with 2 holes
measure mass of block with balance
wrap with insulating layer
insert thermometer and heater, connect up circuit
measure initial temperature with thermometer
turn on power supply and start stopwatch
record reading of temperature at the end of time (with thermometer)
E = P x t
Density
density = mass / volume
mass per unit volume
kg/m3
denser material, more tightly packed its particles are
States Of Matter
Solid
strong forces hold particles together
close together in fixed, regular arrangement
not much energy
vibrate around fixed points
highest density
Liquid
weaker forces hold particles close together
move past each other
irregular arrangements
more energy than solids
move in random directions, low speeds
slightly less dense
Gas
almost no forces
free to move
more energy than liquids
random directions, higher speeds
much less dense
PRACTICAL
Regular Shape
measure width, length, height (ruler) (metres)
multiply - volume (m3)
measure and record mass (mass balance)
mass / volume to find density
Irregular Shape
fill eureka can with water
place beaker under spout of can
place irregular shape in can
measure volume of water collected in beaker (measuring cylinder) (m3)
measure and record mass (mass balance)
mass / volume to find density