chemistry hw 1

b. work

c. heat

2. What is kinetic energy, and what is the equation, given in Chapter 5, for kinetic energy?

3. List two different units for energy, give SI units where appropriate.

4. How is a food “Calorie” different from an energy “calorie”?

5. Restate the first law of thermodynamics in your own words.

6. (4 points) Matching: Place the letter of the correct definition on the line in front of the given term.

calorimeter a. enthalpy change that accompanies a reaction

endothermic b. heat capacity of one gram of a substance

enthalpy c. E + PV

enthalpy of reaction d. portion not singled out for study

exothermic e. process in which the system absorbs heat

Hess’s Law f. work involved in the compression or expansion of gas

pressure-volume work g. property of a system determined by specifying the system’s condition

specific heat h. ∆H for the overall reaction = sum of steps

standard enthalpy change i. portion singled out for study

state function j. enthalpy change when all substances are in their standard

states

surroundings k. process in which the system loses heat

system l. device used to measure heat flow