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Camponeschi - chemistry targets 1 & 2

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What makes up all matter?   atoms  
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true or false - atoms are in constant motion   true  
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what is the relationship between temperature and motion of atoms   the warmer (more thermal energy) the atoms are (have), the faster they are moving  
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What is not made of matter?   energy - electricity, heat, light, sound, etc.  
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Describe the motion of atoms/molecules in a solid   they atoms are vibrating in place  
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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.  
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Describe the motion of atoms/molecules in a gas.   the atoms are moving the fastest of all three states  
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solid   a substance that has a definite shape and volume  
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liquid   a substance that has a definite volume, but not a definite shape - it takes the shape of its container  
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gas   a substance that has no definite shape or volume  
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condensation   phase change from gas to liquid  
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melting   phase change from solid to liquid  
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boiling   phase change from liquid to gas  
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freezing   phase change from liquid to solid  
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sublimation   phase change from solid to gas (skipping liquid phase)  
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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.  
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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  
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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  
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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  
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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)  
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Created by: camponel
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