Heating and Cooling Curve

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Presentation transcript:

Heating and Cooling Curve

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

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

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 - https://quizlet.com/112460380/reading-heating-and-cooling-curves-flash-cards/

This graph shows an endothermic change

This graph shows an exothermic change

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