2. Define oxide.
3. Explain what is meant by the term mole.
4. Distinguish between exothermic and endothermic reactions.
5. Identify the nature of chemical energy.
6. Describe the relationship between the chemical energy absorbed or given off in a chemical change and the stabilities of the substances involved.
7. Explain what is meant by activation energy.
8. Compare gas, liquid, and solid fuels from the point of view of the pollution they produce when burned.
9. List the four factors that affect the speed of a chemical reaction.
1o. Explain why reaction rates depend strongly on temperature.
11. Describe what is meant by a chemical equilibrium.
12. List the three main ways in which a chemical equilibrium can be altered to favor one direction over the other.
13. Distinguish between oxidation and reduction in terms of the electrons transferred in each case.
14. Describe electrolysis.
15. Explain the basic principle behind the operation of electrochemical cells.
16. Compare batteries and fuel cells.