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Chris M.
Chris M., M.S.W. Social Work
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1. When metals react with oxygen they form A) new elements. B)

Resolved Question:

1. When metals react with oxygen they form:
A) new elements.
B) halides.
C) oxides.
D) metalloids.
2. Which of the following is/are characteristic(s) of bases?
A) Taste bitter
B) Reacts with acids to form salts
C) Produce hydroxide ions when added to water
D) All are characteristics of bases
3. Hydrogen gas converts tungsten oxide to tungsten metal. Hydrogen (H2) is a(n):
A) acid.
B) base.
C) oxidizing agent.
D) reducing agent.
4. The unique aspect of a saturated hydrocarbon is that it must contain:
A) only carbon and hydrogen.
B) only single bonds.
C) single and double bonds.
D) single, double and triple bonds.
5. A battery is a device that converts chemical energy into:
A) electrical energy.
B) chemical energy.
C) nuclear energy.
D) light energy.
6. One of the primary ingredients in vinegar is:
A) acetic acid.
B) butyric acid.
C) formic acid.
D) hydrochloric acid.
7. Compounds with the same number and kinds of atoms but with different structures are known as:
A) homologs.
B) isotopes.
C) isomers.
D) allotropes.
8. Organic chemistry is most broadly defined as the:
A) chemistry of living systems.
B) chemistry of materials produced by living systems.
C) chemistry of the compounds of carbon.
D) chemistry of the non-metallic compounds.
9. An unknown substance is added to a solution and the pH decreases. The substance is best described as a(n):
A) acid.
B) base.
C) salt.
D) solvent.
10. A homologous series of alcohols contains:
A) the same number of carbon atoms, but a different number of hydroxyl groups.
B) the same number of carbon atoms and the same number of hydroxyl groups.
C) a different number of carbon atoms, but the same number of hydroxyl groups.
D) only isomers.
11. The corrosion of metals, such as the rusting of iron, is an example of:
A) reduction.
B) oxidation.
C) proton transfer.
D) transmutation.
12. In which of the following is the reactant undergoing oxidation? (Note: These reactions are not complete chemical reactions.)
A) Cl2 ? 2 Cl
B) WO3 ? W
C) 2 H+ ? H2
D) C ? CO2
13. The most important commercial organic compound is:
A) methane, CH4.
B) ethane, CH3CH3.
C) ethylene, CH2=CH2.
D) propane, CH3CH2CH3.
14. A major advantage of lead storage batteries is that they are:
A) lightweight.
B) rechargeable.
C) disposable.
D) all of the above.
15. Esters are often used as:
A) anesthetics.
B) disinfectants.
C) fragrances.
D) insecticides.
16. The major element that composes the human body is:
A) oxygen.
B) carbon.
C) nitrogen.
D) water.
17. A ruptured tank in Anywhere, USA spilled hydrochloric acid. Officials were reported to be "concerned that the acid might mix with sodium hydroxide (caustic soda) in a neighboring tank and form a toxic gas." What toxic gas would be formed?
A) carbon dioxide
B) chlorine
C) chlorine dioxide
D) none
18. Petroleum jelly is:
A) a mixture of low carbon number hydrocarbons.
B) a mixture of moderate carbon number hydrocarbons.
C) a mixture of higher carbon number hydrocarbons.
D) none of the above
19. The four basic tastes are all related to acids and bases in some manner. The taste sensation with the least direct, least well understood, and probably most complex relationship between taste response and acid/base properties is:
A) bitter.
B) sour.
C) salt.
D) sweet.
20. Aluminum is more reactive than iron, yet it is used today for a variety of applications in which iron would corrode (cans, rain gutters, etc). The reason for the corrosion durability of aluminum is that:
A) aluminum does not react with oxygen.
B) very unreactive aluminum oxide forms a thin layer on aluminum.
C) aluminum does not undergo oxidation.
D) all aluminum products are treated with a plastic coating.
21. Many medicines have a bitter taste that manufacturers attempt to disguise. Many medicines are probably:
A) acids.
B) bases.
C) salts.
D) neutral.
22. Lime is used in farming to reduce the acidity of soil. The chemical same for lime is calcium oxide. When water in the soil reacts with lime, what base is formed?
A) CaO
C) Ca2OH
D) Ca(OH)2
23. Propane, benzene, acetylene, and 2-butene are all examples of:
A) alkenes.
B) alkanes.
C) aromatic compounds.
D) hydrocarbons.
24. Every reduction reaction must be accompanied by:
A) an oxidation reaction.
B) formation of covalent bonds.
C) formation of ionic bonds.
D) formation of water.
25. Given their mode of action, antiseptics are generally best classified as:
A) oxidizing agents.
B) reducing agents.
C) acids.
D) bases.
26. In the reaction, N2 + 3 H2 ? 2 NH3, hydrogen is:
A) a catalyst.
B) a product.
C) a reducing agent.
D) an oxidizing agent.
27. In representing the general formula of various functional groups, the symbol R stands for:
A) a halogen atom.
B) a ring.
C) an aromatic group.
D) an alkyl group.
28. Hard water deposits (calcium carbonate) have built up around your bathroom sink. Which one of the following would be best to dissolve the deposit?
A) Ammonia
B) Bleach
C) Lye
D) Vinegar
29. Human cells obtain energy by:
A) oxidizing carbohydrates.
B) reducing proteins.
C) reducing carbon dioxide.
D) absorbing sunlight.
30. In general, CFCs are:
A) solids with high melting points.
B) solids with low melting points.
C) liquids with high boiling points.
D) gases, or liquids with low boiling points.
31. In organic chemistry, compounds are generally classified by:
A) state.
B) functional group.
C) color.
D) odor.
32. Many of the flavors isolated from foods are:
A) carboxylic acids.
B) esters.
C) alcohols.
D) ketones.
33. Methanol is an important solvent. It is also an important starting material for the synthesis of other molecules. Most methanol today is obtained from:
A) destructive distillation of wood.
B) hydrogenation of carbon monoxide.
C) fermentation of corn.
D) decomposition of animal waste.
34. Most chemical explosions are _______ reactions.
A) nuclear fission
B) oxidation-reduction
C) neutralization
D) precipitation
35. Organic compounds that contain a benzene ring or possess certain properties similar to those of benzene are called ________ compounds.
A) alkaloid
B) acidic
C) aromatic
D) saturated
36. Swimming pools are "chlorinated" in order to:
A) improve taste of the water.
B) disinfect the water.
C) clarify the water.
D) purify the water.
37. The acid in automobile batteries is:
A) hydrochloric acid.
B) nitric acid.
C) phosphoric acid.
D) sulfuric acid.
38. The functional group of the organic acids is the:
A) hydroxyl group.
B) amine group.
C) carbonyl group.
D) carboxyl group.
39. The hydrocarbon that is used in torches along with oxygen to produce very hot flames for cutting and welding is:
A) ethylene.
B) methane.
C) propane.
D) acetylene.
40. The pH of a sample of water from a river is 6.0. A sample of effluent from a food processing plant has a pH of 4.0. The concentration of hydronium ion in the effluent is:
A) one and a half times (1.5x) larger than the river hydronium ion concentration.
B) two times (2x) larger than the river hydronium ion concentration.
C) four times (4x) larger than the river hydronium ion concentration.
D) 100 times (100x) larger than the river hydronium ion concentration.
41. The pH of rain collected on a remote island in the Pacific is assumed to be unaffected by human pollution. The pH of the rainwater will be
A) less than 7.
B) equal to 7.
C) greater than 7.
D) 0.
42. The salts of carboxylic acids, such as sodium benzoate, are often used in foods as:
A) flavor enhancers.
B) colorings.
C) sweeteners.
D) preservatives.
43. The same number of moles of acetic acid and hydrogen chloride are placed in beakers containing water. After this addition, the beaker with the HCl has more hydronium ions than the beaker with added acetic acid. HCl is classified as:
A) a weaker acid than acetic acid.
B) a stronger acid than acetic acid.
C) equal in acid strength to acetic acid.
D) a base.
44. What is the name of a compound with formula CH3CH2CH3?
A) Methane
B) Ethane
C) Propane
D) Butane
45. When added to water, which one of the following would produce an acid?
A) Mg
B) Na2O
C) NH3
D) CO2
46. When C3H8 is burned in oxygen, the products are:
A) C + H2.
B) CH2 + H2O.
C) CO2 + H2.
D) CO2 + H2O.
47. When citric acid produced by the cells of an orange and dissolves in water, it produces a relatively small number of hydronium ions. Citric acid is described:
A) as a dilute acid.
B) as a concentrated acid.
C) as a weak acid.
D) as a strong acid.
48. Which of the following does not contribute to acid rain?
A) Coal-burning power plants
B) Lightning
C) Volcanic eruptions
D) None--all of the above contribute to acid rain
49. Which of the following is not a reason for the great variety of organic molecules?
A) The ability of carbon to form chains
B) Carbon atoms can form more than four bonds.
C) Isomerism
D) Carbon forms bonds with a variety of elements, such as H, O, N, Cl, Br, ...
50. Which of the following families of organic compounds does not contain an oxygen atom?
A) Alcohol
B) Amine
C) Carboxylic acid
D) Ketone
Submitted: 7 years ago.
Category: Homework
Expert:  Chris M. replied 7 years ago.

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Expert:  Chris M. replied 7 years ago.

Hello Moe,


I don't know if you submitted these yet, but I noticed a couple of typos: #3 should be 'D', #9 should be 'A', and #21 should be 'B'.


-Chris M.