Physics - P1

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arrangement + movement of solids
vibrate in fixed positions | fixed volume and shape | cannot be compressed
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arrangement + movement of liquids
move past each other | fixed volume, no fixed shape | become the shape of container | cannot be compressed
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arrangement + movement of gases
free to move | random arrangement | no fixed volume or shape
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what did Democritus say about atoms? how did he come to this conclusion?
they cannot be cut. he didn't do any experiments.
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what did Dalton say about atoms? how did he come to this conclusion?
small, indestructible spheres. he did experiments with compounds.
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what did Thompson say about atoms? how did he come to this conclusion?
"plum pudding" model. negative electrons floating in positive charge. he discovered this as electrons were negative and could be found inside the atom.
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what did Rutherford say about atoms? how did he come to this conclusion?
introduced nucleus and electrons, saying electrons orbited a small nucleus in the centre of the atom, which contained protons and neutrons. gold foil experiment - fired positively charged particles at a small sheet of gold foil, and most deflected.
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what did Bohr say about atoms? how did he come to this conclusion?
electrons orbit nucleus in fixed shells. this explained by the orbits were stable.
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how big are atoms?
10^-10 in diameter
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define specific heat capacity.
energy change needed to change temperature of 1kg of substance by 1 degree.
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equation for change in thermal energy.
mass x specific heat capacity x change in temperature
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equation for density.
mass / volume
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what is specific latent heat?
energy needed to change state.
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what is specific latent heat of fusion?
changing between solid and liquid
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what is the specific latent heat of vaporisation?
changing between liquid and gas
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how can you increase pressure of gases? how does this work?
increase temperature (they gain more energy and move faster, causing more collisions) or pressure (closer together, more chance of successful collisions)
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equation for thermal energy needed for a change in state.
mass x specific latent heat
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Card 2

Front

arrangement + movement of liquids

Back

move past each other | fixed volume, no fixed shape | become the shape of container | cannot be compressed

Card 3

Front

arrangement + movement of gases

Back

Preview of the front of card 3

Card 4

Front

what did Democritus say about atoms? how did he come to this conclusion?

Back

Preview of the front of card 4

Card 5

Front

what did Dalton say about atoms? how did he come to this conclusion?

Back

Preview of the front of card 5
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