How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Chris M. Your Own Question

Chris M.
Chris M., M.S.W. Social Work
Category: Homework
Satisfied Customers: 2505
Experience:  Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
22285537
Type Your Homework Question Here...
Chris M. is online now
A new question is answered every 9 seconds

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
B) CaOH
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: 4 years ago.
Category: Homework
Expert:  Chris M. replied 4 years ago.
THIS ANSWER IS LOCKED!
You can view this answer by clicking here to Register or Login and paying $3.
If you've already paid for this answer, simply Login.
Chris M., M.S.W. Social Work
Category: Homework
Satisfied Customers: 2505
Experience: Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
Chris M. and 5 other Homework Specialists are ready to help you
Expert:  Chris M. replied 4 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.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • Manal Elkhoshkhany

    Tutor

    Satisfied Customers:

    4520
    More than 5000 online tutoring sessions.
< Last | Next >
  • http://ww2.justanswer.com/uploads/BU/BusinessTutor/2012-2-2_115741_Kouki2.64x64.jpg Manal Elkhoshkhany's Avatar

    Manal Elkhoshkhany

    Tutor

    Satisfied Customers:

    4520
    More than 5000 online tutoring sessions.
  • http://ww2.justanswer.com/uploads/LI/lindaus/2012-6-10_04811_IMG20120609164157.64x64.jpg Linda_us's Avatar

    Linda_us

    Finance, Accounts & Homework Tutor

    Satisfied Customers:

    3121
    Post Graduate Diploma in Management (MBA)
  • http://ww2.justanswer.com/uploads/ComputersGuru/2010-02-13_051118_Photo41.JPG LogicPro's Avatar

    LogicPro

    Engineer

    Satisfied Customers:

    3035
    Expert in Java C++ C C# VB Javascript Design SQL HTML
  • http://ww2.justanswer.com/uploads/lanis/2009-4-1_233717_phput9xef_c1pm.jpg Lani S.'s Avatar

    Lani S.

    Tutor

    Satisfied Customers:

    2457
    Registered Nurse, Internet Researcher, Private Tutor
  • http://ww2.justanswer.com/uploads/chooser77/2009-08-18_162025_Chris.jpg Chris M.'s Avatar

    Chris M.

    M.S.W. Social Work

    Satisfied Customers:

    2341
    Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
  • http://ww2.justanswer.com/uploads/JawaadAhmed/2009-6-27_12137_SIs_SHadi.jpg F. Naz's Avatar

    F. Naz

    Chartered Accountant

    Satisfied Customers:

    1975
    Experience with chartered accountancy
  • http://ww2.justanswer.com/uploads/JK/jkcpa/2011-1-16_182614_jkcpa.64x64.jpg Bizhelp's Avatar

    Bizhelp

    CPA

    Satisfied Customers:

    1873
    Bachelors Degree and CPA with Accounting work experience
 
 
 

Related Homework Questions