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Equation for Heat (temperature change)
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Q=MC∆T
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Equation for heat (phase change)
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Q=mL
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What is the caloric theory?
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Heat was suggested as a fluid-like substance that was colourless and tasteless.
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What is the joule theory?
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Heat was suggested as a form of energy. Transfer of mechanical energy to a material causes increase in temperature, speed, height or any other physical state.
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What is work?
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Work is the product of force and displacement. Work occurs when energy is transformed from one form to another.
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Does amount of energy change during a energy transformation?
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No
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What is the kinetic theory?
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It suggests that all matter is made of atoms and molecules. These are in constant motion.
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What are some of the assumptions of the kinetic molecular theory?
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It applies to solid, liquid and gas. There is many particles and they are in constant motion. None are lost or gained and attraction and expulsion occurs.
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Compare the differences of solid, liquid and gas.
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Solid is vibrating in a fixed shape. Liquid is weaker than solid and has greater volume. They are able to move around. Gas is in constant, random motion.
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How does a change of state occur?
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If a solid changes to a liquid then the molecular receives energy and the particles break. Kinetic and potential energy is gained.
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What happens when a transfer of energy occurs?
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The temperature and speed increases. The particles begin to collide and transfer energy. Potential and kinetic energy is gained.
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Define temperature
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Measurement of average kinetic energy.
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Define heating
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Transfer of heat energy.
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What affects temperature?
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Mass, material and amount of energy
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Does the temperature change while the material is melting?
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No
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