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Heating and Cooling Curve

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Presentation on theme: "Heating and Cooling Curve"— Presentation transcript:

1 Heating and Cooling Curve

2 Temperature and heat are not the same thing
measure of the average kinetic energy of the particles in a sample, measured in K or C K = C + 273 Heat the energy that is transferred from one object to another due to a difference in temperature

3 Endothermic and Exothermic
These reactions absorb thermal energy Feels cold to the touch These reactions release thermal energy Feels hot to the touch

4 What is a heating/cooling curve?
A heating/cooling curve is a simple line graph that shows the phase changes a given substance undergoes with increasing or decreasing temperature. Great Quizlet -

5 This graph shows an endothermic change

6 This graph shows an exothermic change

7 Melting/ Freezing & Boiling/ Condensing
Molecules go back and forth between the phases Melting/ Freezing: H2O(s) H2O(l) Melting & Freezing Points are the temperatures at which these changes occur Boiling/ Condensing: H2O(l) H2O(g) Boiling & Condensing Points are the temperatures at which these changes occur

8

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