1. Activation energy is

a. energy needed to start a reaction
b. energy given off by a reaction
c. energy absorbed by a reaction
d. also called free energy

2. In experiment 7, vinegar, it was found that

a.the % acetic acid was inversely proportional to the number of drops of NaOH solution needed to reach an endpoint
b.the % acetic acid was directly proportional to the number of drops of NaOH solution needed to reach an endpoint
c.the solution turned from pink to clear at the endpoint
d.All of the above.

3.Pyruvic acid

a.requires oxygen to complete the metabolism to carbon dioxide & water
b.requires no oxygen to complete the metabolism to carbon dioxide & water
c.is another name for vitamin C
d.results from both fat & carbohydrate metabolism
e.a & d above

4.Fat metabolism (burning)

a. requires no oxygen
b. requires oxygen
c. does not result in the pyruvic acid intermediate
d. all above

5.Ozone and chlorine

a. are oxidizing agents
b. are used in water treatment to eliminate microbes
c. are reducing agents
d. a & b

6. In the class demonstration of buffers

a. it was clear that Oneonta tap water is heavily buffered
b.the pH 7 buffer was only slightly affected by addition of acid or base
c. red was the color of very basic solutions
d.Oneonta tap water was only slightly affected by addition of acid or base

7.Fats in the human body through metabolism

a.can be converted to energy only
b. can be converted to carbohydrates
c. can be converted to proteins
d. all above are true

8. A true statement about physical activity is

a.men need larger quantities of minerals such as Fe, Cu and Zn than women
b.proteins can be converted to carbohydrates when carbohydrates are insufficient for energy needs
c.carbohydrates can be converted to proteins
d.aerobic exercise has not been found to increase cardiovascular fitness

9.A substance was placed in contact with water. The substance dissolved. The solution was tested for conductivity and found to conduct electricity. The substance did not conduct electricity unless dissolved in water. The substance is most likely to be:

a.ionic
b.polar covalent
c.covalent
d.metallic

10.A chemical reaction in which an acid and a base produce a salt and water is called a

a. neutralization
b. redox
c. transmutation
d.metallization

11.In the "shell game" demo when the instructor had three styrofoam cups and poured water into one- no water would pour out later- the reason for the "disappearance" of water was

a.a substance was in the cup that had the water- hydrogen bonds helped absorb the water into a semisolid mass.
b. the water evaporated
c.there was a hole in the cup into which the water was poured
d.the whole demo was an optical illusion

12.The substance that was needed to produce slime from guar gum solution was

a. hexamine diamiine
b. sodium borate (borax)
c. NaOH
d. alcohol

13. Ozone

a. blocks UV light from solar radiation
b. is an isotope of oxygen
c. is an allotrope of oxygen
d. all above
e. a & c above

14.Given the formula weights of Ca (40), C(12) and O(16) compute the formula mass (mass per mole) of CaCO3.

a. 100
b. 100g/mole
c. 68
d. 68g/mole

15.The following are main contributors to acid precipitation:

a. SOx
b. NOx
c. CO
d. a & b
e. a, b & c

16.Gases such as carbon dioxide are

a. more soluble in hot than cold water
b. less soluble in hot than cold water
c. as soluble in hot as cold water
d. insoluble in water

17. Increases in time of reaction are seen when

a. no catalyst is used
b. temperature is increased
c. concentration is increased
e. powdered coal is used rather than large pieces

18. Rates of reaction are directly proportional to

a. time of reaction
b. temperature of reaction
c. concentration of reactants
d. all above
e. b & c only

19. The first law of thermodynamics states that

a. energy is lost in a chemical reaction
b. energy is neither lost nor gained in a chemical reaction
c. heat flows from cold to hot
d. heat flows from hot to cold

20.The optimum pH of human blood and its acid/base status is

a. 7.4/acidic
b.7.7/basic
c. 7.4/basic
d. 7.1/acidic

21.The antacid chemical that people with high blood pressure should avoid is

a. CaCO3
b. Al(OH)3
c.NaHCO3
d.Mg(OH)2

22. The gas most probably associated with greenhouse effect is

a. nitrogen
b. carbon dioxide
c. oxygen
d. argon

23.The least sophisticated method of treating wastewater is

a.tertiary
b. secondary
c. primary
d.none above

24.Eutrophication in fresh water is most easily slowed down by removal of from wastewater and runoff from fields.

a. phosphate
b. organic matter ( C )
c. potassium
d. nitrate

25.The ions Ca+2 and Br-1 form an ionic compound. The most likely formula is

a.CaBr
b.CaBr2
c.Ca2Br
d.2CaBr

26.The production of lactic acid in metabolism occurs under conditions,

a. aerobic
b.basic
c. anaerobic
d. alkalosis

27.In the reaction below is(are) oxidized.

NiO + Ca = CaO + Ni

a. NiO
b. Ca
c. both NiO and Ca
d. Neither NiO nor Ca

28.Oxidizing agents are normally

a. metals
b. nonmetals
c. transition metals
d. halogens
e. b & d above

29. A way to raise the pH of an acidified lake (pH less than 5) is to

a. add CaCO3
b. add HCl
c. add HNO3
d. add carbon dioxide

30.In lecture an experiment was done in which S was burned in a gallon jug with water and universal pH indicator. As the S burned-

a. pH went up
b. pH went down
c. NOx was produced
d. acidity went down

This is the end of the exam. Be sure to put the color on your answer sheet along with your name and SSN. Be sure to fill in the information on the front page of this exam booklet.