1. Most catalysts found in biological systems are which of the following?

2. Based on collision theory, what is the effect of temperature on the rate of chemical reaction?

3. Which of the following choices contain the lowest coefficients that will balance the following combustion equation?__C2H10+__O2__H2O+__CO2

4. What is the purpose of a catalyst?

5. What step happens first in protein synthesis?

6. How are similar chemical properties of elements grouped on the periodic table?

7. Which of the following is NOT a unique property of water?

8. Which particle is responsible for all chemical reactions?

9. What is the term for a homogeneous mixture that does not have the Tyndall effect?

10. How are a sodium atom and a sodium isotope different?

11. Which is NOT a disaccharide?

12. Aspirin is used as a non-steroidal anti-inflammatory drug (NSAID). It is available as an over-the-counter (OTC) medication for the treatment of pain, inflammation, and fever. A low dose of aspirin is also used for prevention of cardiovascular events including heart attack and stroke, which occurs secondary to blood clot formation. However, aspirin is a prodrug that needs to be bio-converted into an active drug, salicylic acid. Given that aspirin is chemically termed as acetyl salicylic acid, and salicylic acid is ortho-hydroxybenzoic acid, how would you best describe the bio-conversion reaction?

13. Salts like sodium iodide (NaI) and potassium chloride (KCl) have what type of bond?

14. What does the law of conservation of mass state?

15. Which of the following is NOT a function of lipids?

16. Which of these give atoms a negative charge?

17. Which of the following aldehyde(s) can undergo a Cannizzaro reaction?

18. Which one of the following molecules has isomers that are optically active?

19. Nonpolar molecules must have what kind of regions?

20. Which of the following is a nucleophilic reagent?

21. Which of these is a substance increases the rate of a chemical reaction?

22. Which of the following statements is true about an aldol condensation reaction?
I. Aldehydes with α-H can undergo the aldol condensation.
II. CH3CHO can undergo aldol condensation.
III. Benzaldehyde can undergo aldol condensation.

23. What is the basic unit of matter?

24. Which substance is oxidized in the following reaction?
4Fe + 3O2 → 2Fe2O3

25. What is the effect of pressure on a liquid solution?