Presentation on theme: "AP Chemistry Due Next Class: Reading & Proof of Reading"— Presentation transcript:

1 AP Chemistry Due Next Class: Reading 5.4-5.5 & Proof of ReadingUpcoming Due Dates: Cond/Grav Lab Due 10/3 MC Ch. 5 Due 10/8 MC AF Due 10/10 Ch. 5-7 Test 10/25

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2 Warm up Ms. Bryce gets cold very easily and always keeps some hand warmers in the back of her car, and in the inside pocket of her ski coat. Based on your reading for today’s class. Is this reaction exothermic or endothermic? What is the sign of q? What is the sign of w? What is the sign of ∆E? - ? not a large positive number -

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3 Reading Quiz

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4 Energy Thermodynamics: The study of energy transformationsThermochemistry: Applies the field of thermodynamics specifically to chemical reactions.

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5 Units of Energy JOULE: CALORIE: 1 cal = J (Note: this is not the same as the calorie of foods; the food calorie is 1 kcal!)

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6 Definitions: System and SurroundingsSystem includes the molecules we want to study (here, the hydrogen and oxygen molecules). Surroundings are everything else (here, the cylinder and piston). VERY IMPORTANT CONCEPT!

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7 Gravitational Potential EnergyPotential energy is energy an object possesses by virtue of its position: