1. Changes in Kinetic Energy

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4 Terms

1
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What are the three factors that are needed to determine the amount of energy needed to heat a substance

  1. The MASS of the substance

  2. The CHANGE IN TEMPERATURE (ex: heating 10ml water at 1 degree and 5 ml and 2 degrees)

  3. the TYPE of substance (heat capacity) (ex; water, iron, aluminum all different capacities)

2
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Heat capacity is heat required to change the temperature of WHAT of a substance by WHAT

Heat capacity is heat required to change the temperature of ONE GRAM of a substance by 1°c

3
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The LOWER the heat capacity the WHAT the temperature change for a given amount of WHAT

The LOWER the heat capacity the HIGHER the temperature change for a given amount of HEAT

4
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What is the equation

Q = mcΔt

where:

Q = Heat energy (J)

m = grams (g)

c = heat capacity (J/g°c) (look at data-table)

Δt = change in temperature (°c)