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Camponeschi

Camponeschi - chemistry targets 1 & 2

QuestionAnswer
What makes up all matter? atoms
true or false - atoms are in constant motion true
what is the relationship between temperature and motion of atoms the warmer (more thermal energy) the atoms are (have), the faster they are moving
What is not made of matter? energy - electricity, heat, light, sound, etc.
Describe the motion of atoms/molecules in a solid they atoms are vibrating in place
Describe the motion of atoms/molecules in a liquid the atoms are moving faster than in a solid - the bonds between the atoms/molecules are not as strong.
Describe the motion of atoms/molecules in a gas. the atoms are moving the fastest of all three states
solid a substance that has a definite shape and volume
liquid a substance that has a definite volume, but not a definite shape - it takes the shape of its container
gas a substance that has no definite shape or volume
condensation phase change from gas to liquid
melting phase change from solid to liquid
boiling phase change from liquid to gas
freezing phase change from liquid to solid
sublimation phase change from solid to gas (skipping liquid phase)
how does the motion of molecules change during melting? the molecules are vibrating so fast from the increased thermal energy in the environment that they break free from their fixed positions.
How does the motion of molecules change during freezing? The substances loses energy to the environment causing them to move more slowly - so slowly they stick together in fixed positions
How does the motion of molecules change during condensation? the molecules lose energy to the environment causing them to move more slowly and start to stick together in the form of a liquid
How does the motion of molecules change during boiling? the increase in energy from the environment causes the molecules to move so quickly where they break free from each other and become a gas
How does the motion of molecules change during sublimation? substance gains so much energy from environment that the particles vibrate so much they break free of each other and become a gas (skipping the slower moving liquid phase)
Created by: camponel
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