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9 Cards in this Set
- Front
- Back
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How are particles arranged in a solid? |
Close together. No room for them to move closer together (not compressible). Vibrate around a fixed point. Strong forces of attraction. Forces becomes repulsive as the partials get closer. Particles are held together strongly. |
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How are particles arranged in a liquid? |
As tightly packed as solids with weak bonds, allowing them to slide over each other. Medium kinetic energy. |
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How are particles arranged in a gas? |
Far apart. Space between particles so can be compressed. Move randomly. No forces of attraction. Spread out in all directions (fill the container) |
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How is heat energy transferred in conduction? |
Particles are closely packed. Particles vibrate when heated. Particles pass on kinetic energy to the next particles making that vibrate |
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Why are metals the best conductors? |
Metals have free electrons between the ions. The free electrons gain kinetic energy and move faster. The electrons move around the metal, collide with other electrons and ions transferring the energy. |
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How is heat transferred in convection? |
Liquid particles absorb heat energy. Particles gain ken ethic energy, vibrate more and move apart. Piqued becomes less dense and rises. Particles begin to cool, lose kinetic energy, vibrate less and move back together. Liquid becomes more dense and sinks. |
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What factors affect the rate of evaporation? |
Increasing the liquid's surface area. Increasing in liquid temperature. Increasing the draught across the liquid surface. |
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What factors effect the rate of condensation? |
Increasing the area of the surface. Decreasing the temperature of the surface. |
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What factors increase the rate of energy transfer? |
The bigger the temperature difference the faster the rate of energy transfer. |
