| 1. | Define “potential energy” and “kinetic energy”. Give some specific examples of each form of energy. | |
| 2. | What is the SI unit for energy? | |
| 3. | State the Law of Conservation of Energy. What is another name for this Law? | |
| 4. | What is the relationship between the amount of kinetic energy a particle has and how fast it is moving? Pick one of the following: | |
| A. | Slower moving particles have more kinetic energy than faster particles. | |
| B. | Faster moving particles have more kinetic energy than slower particles. | |
| C | Speed of motion and kinetic energy are not related. | |
| 5. | A. | Convert the following to Kelvin temperatures: 10°C , -20°C |
| B. | Convert the following to Celsius temperatures: 25 K, 300 K | |
| 6. | Identify each of the following as either endothermic or exothermic: |
|
| A. | Cu(s) + Cl2 (g) → CuCl2 (s) + 220.1 kJ | |
| B. | 6 CO2 (g) + 6 H2O (l) + 2802 kJ → C6H12O6 (s) + 6 O2 (g) | |
| 7. | If you were holding reaction 6A in your hand, would your hand feel warmer or colder? Explain. | |
| 8. | When potassium nitrate dissolves in water, the beaker containing the solution gets cooler. Is dissolving this salt an exothermic or endothermic process? Explain. | |
| 9. | What is calorimetry? | |
| 10. | How much heat would have to be absorbed by 2000 grams of water to change its temperature from 20°C to 50°C? Use the value 4.2 J/(g °C) for the specific heat of water. Show your calculations. | |
| Hint: You will need to use the formula: Q = mc ΔT. Solve for Q | ||
| 11. | If 500 grams of water at 25°C loses 1.05× 104 joules of heat, what will be the final temperature of the water? Show your work. | |
| Hint : You will use the formula Q = mc ΔT. Solve for ΔT, then find the final water temperature. | ||
Chemistry 30
Thermodynamics: Unit Index | Practice Problems | Assignments
| Student Lab | Research Ideas | Teacher Resources
Kinetics: Unit Index | Practice Problems | Assignments
| Student Lab | Research Ideas | Teacher Resources
Equilibrium: Unit Index | Practice Problems | Assignments
| Student Lab | Research Ideas | Teacher Resources
Solutions: Unit Index | Practice Problems | Assignments
| Student Lab | Research Ideas | Teacher Resources
Acids & Bases: Module Index | Practice Problems | Assignments
| Student Lab | Research Ideas | Teacher Resources
Redox Reactions: Module Index | Practice Problems | Assignments
| Student Lab | Research Ideas | Teacher Resources