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P1 (Pressure (Temperature (Increase temp. increases speed of particles,…
P1
Pressure
Temperature
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Pressure would be zero at -273.14C°, absolute zero
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Atmospheric
Earth atmospheric pressure = 101,325 Pa (100kPa)
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Buoyancy
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Water exerts upwards force, balanced by your weight
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Particle model
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Thomson
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Must have come from inside the atom, negative charge
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Rutherford
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Fires alpha particles at gold foil, helped by Geiger & Marsden
Most particles went through, but a few bounced back
Atom has tiny, positive nucleus which rebounded the particles
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Bohr
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Electrons only move in fixed orbits, electron shells
State
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Heat
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e.g. a spark has a high temp., but has low overall energy
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Density
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Conservation of mass, mass of system does not change