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Ch17 Temperature and Heat

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Presentation on theme: "Ch17 Temperature and Heat"— Presentation transcript:

1 Ch17 Temperature and Heat http://www.youtube.com/watch?v=Zz95_VvTxZM

2 Ch17 Temperature: The Story What is temperature? Macroscopic? Measurement. Units. Microscopic? Story. What is the “story” of temperature? PhetPhet What are the other characters in the story? What is the goal in the story? What happens if T increases? What happens if T decreases? What is equilibrium? How do you measure temperature? Scales? How is this idealized?

3 Thermal Expansion Solids/Liquids Variables? Empirical relationship, proportionality Constant Mathematical expression – Linear, Area, Volume Gases Variables? Empirical relationships, proportionalities Constant Mathematical expression – The Ideal Gas Law Ch17

4 Heat and Specific Heat Distinguish heat, temperature, energy, pressure Visualize using a graph Adding heat to a solid, liquid, gas How much energy does it take to raise water 1°C? How much energy does it take to raise aluminum 1°C? How much energy does it take to raise ice 1°C? Specific heat vs. molar heat capacity

5 Ch17 Calorimetry Balancing warming, phase changes, and work 1.Hot water mixed with cold water Limiting cases 2.Ideal temperature measurement 3.Ice in water Starting at 0°C Staring below 0°C Not completely melting Freezing the water

6 Ch17 Heat Transfer Conduction Convection Radiation


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