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Study Resources (Chemistry)

11) What elements are in hydroxyapatite, Ca5(PO4)3OH, a major compound in human bones and teeth? A) carbon, potassium, oxygen, hydrogen B) calcium, phosphorous, oxygen, hydrogen C) carbon, phosphorous, oxygen, helium D) calcium, phosphorous, oxygen, helium E) carbon, potassium, oxygen, helium 12) Which of the following is a characteristic of the modern periodic table? A) A group is.
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11) An example of a disaccharide is A) glucose B) sucrose C) cellulose D) glycogen E) both C and D 12) Which of the following is NOT true regarding disaccharides? A) The disaccharide link is so strong that it cannot be broken during digestion. B) The link between the monosaccharides is called a glycosidic linkage. C) Water is eliminated.
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  2.1   Multiple-Choice Questions 1) Which of the following is an element? A) tin B) water C) salt D) sugar E) iced tea 2) Helium is a(n) A) compound. B) heterogeneous mixture. C) element. D) homogeneous mixture. E) electron. 3) Coins in a piggy bank are an example of a(n) A) compound. B) heterogeneous mixture. C) element. D) homogeneous mixture. E) none of the above 4) Gold in a ring.
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21) Lipids include all of the following compounds EXCEPT: A) phospholipids. B) glycolipids. C) carboxylic acids. D) steroids. E) All of the above are lipids. 22) Which of the following is a saturated fatty acid? A) oleic acid B) linoleic acid C) linolenic acid D) capric acid E) All of the above are saturated fatty acids. 23) Which of the following is.
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Multiple Choice Questions 1) The human genome project showed that humans have approximately ________ genes. A) 46 B) 20,000 C) 36,000 D) 3 Million E) none of the above 2) A roundworm has approximately ________ genes. A) 46 B) 20,000 C) 32,000 D) 3 Million E) none of the above 3) The human genome project is expected to: A) help identify people who are.
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51) Name the following compound: CH3?CH2?CH2?CH2?O? CH2?CH3 A) butyl ethyl ether B) hexyl ether C) ethyl butylone D) 2-hexone 52) Name the following compound: A) propanone B) 2-methyl-2-ethanone C) propanal D) isopropanol E) none of the above 53) A compound named "propanal" would be classified as an A) alcohol. B) amine. C) aldehyde. D) ether. E) none of the above 54) Name the following compound: A).
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41) Which type of structure is maintained by interaction between R-groups on amino acids that are on separate chains? A) Primary Structure B) Secondary Structure C) Tertiary Structure D) Quaternary Structure E) Pental Structure 42) Which type of structure is maintained by interaction between R-groups on amino acids that are separated by short distances on the.
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3.3   True/False Questions 1) Sulfur is a nonmetal. 2) The atomic number is equal to the number of protons. 3) The mass number is equal to the number of electrons. 4) The atomic number of sodium is 23. 5) Ionization energy increases going down a group. 6) Atomic size decreases going from left to right within.
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41) The reaction CH2=CH2 + Br2 → CHBrCHBr would best be described as: A) substitution. B) combustion. C) addition. D) hydrogenation. E) none of the above 42) Name the aromatic compound shown below: A) Phenyl bromide B) Benzyl bromide C) Bromobenzene D) Phenol E) none of the above 43) How many carbon atoms would be in the compound named chlorobenzene? A) 1 B) 5 C).
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31) Which protein structure provides the amino acid sequence? A) Primary Structure B) Secondary Structure C) Tertiary Structure D) Quaternary Structure E) Pental Structure 32) Which protein structure provides the arrangement of polypeptides? A) Primary Structure B) Secondary Structure C) Tertiary Structure D) Quaternary Structure E) Pental Structure 33) Which protein structure provides the large-scale bends and folds in the protein? A) Primary.
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61) Which of the following is the correct electron-dot symbol for carbon? A) B) C) D) E) 62) The atomic size of atoms A) increases going across a period. B) decreases going across a period. C) decreases going down within a group. D) does not change going across a period. E) none of the above 63) The atomic size of atoms A) increases.
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21) Enzymes that act as catalysts are called proteins. 22) Proteins are polymers of amino acids. 23) Amino acids are molecules that contain a side chain, a main chain, an amine group, a carboxylic acid group and a protein group. 24) Protein structures are expressed in terms of amino acid sequence, the short-term.
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1.4   Matching Questions Are the numbers in each of the following statements measured or exact? A) exact B) measured 1) In the U.S. system there are 12 inches in one foot. 2) The patient's blood sugar level is 350 mg/dL. 3) There are 452 pages in a book. 4) The rabbit weighs 2.5 pounds. 5) 1 liter is.
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31) The compound named 2,3-dimethylpentane would have how many total number of carbons? A) 3 B) 5 C) 7 D) 8 E) none of the above 32) What are the products from the combustion of 2-methyl-3-ethyloctane? A) variety of small hydrocarbons B) carbon monoxide, carbon trioxide and water C) carbon dioxide and water D) carbon monoxide and water E) none of.
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True/False Questions 1) The human genome project was embarked upon in the late 1970s with the goal of mapping the entire DNA molecule. 2) Biochemistry is the study of chemical substances and process that occur in plants, animals and microorganisms. 3) The four main classes of biochemical compounds are carbohydrates, lipids, proteins and.
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11) Which of the following is a chemical change? A) cutting a rope B) bending a steel rod C) making a snowman D) burning sugar E) melting gold 12) Which of the following is a physical change? A) baking a cake B) dry ice subliming C) fermenting grapes to produce wine D) digesting a meal E) a tomato ripening 13) Which of.
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1.2   True/False Questions 1) The reddish-brown color of smog is due to NO2. 2) Chloroflourocarbons are broken down in the upper atmosphere to produce oxygen, O2. 3) Titanium dioxide in toothpaste is used as a detergent. 4) Alchemists believed there were four components of nature: earth, fire, air, and water. 5) Organic chemistry is the.
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41) What is the conversion factor for the relationship between millimeters and centimeters? A) 1 mm/1 cm B) 10 mm/1 cm C) 1 cm/1 mm D) 100 mm/1 cm E) 10 cm/1 mm 42) Which of the following is the smallest unit? A) gram B) milligram C) kilogram D) decigram E) microgram 43) The cubic centimeter (cm3 or cc) has the same.
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3.4   Matching Questions Do the following represent elements in a group, a period, or neither? A) group B) period C) neither 1) Li, Na, K 2) Li, C, F 3) F, S, P 4) O, S, Se 5) He, H, I Match the correct symbols with the names of elements. A) Ca B) Cl C) C D) Co E) Cu 6) calcium 7) copper 8) carbon 9) chlorine 10) cobalt .
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  4.1   Multiple-Choice Questions 1) The octet rule indicates that A) all of the noble gases have eight total electrons. B) all of the shells in an atom hold a maximum of 8 electrons. C) all of the Group A elements have 8 valence electrons. D) atoms lose, gain, or share valence electrons to have 8.
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  3.1   Multiple-Choice Questions 1) The primary substances of which all other things are composed are A) molecules. B) compounds. C) elements. D) electrons. E) protons. 2) Au is the symbol for A) gold. B) silver. C) argon. D) aluminum. E) sodium. Select the correct symbol for the element named. 3) aluminum A) Al B) Am C) Au D) Sn E) Ag 4) iron A) Ir B) Fs C) Fe D) In E) FE 5) sodium A) So B).
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  Give the correct number of electrons. A) seven B) eight C) five D) one E) two 11) in the outer energy level of nitrogen 12) in the second energy level of magnesium 13) in the highest occupied electron energy level of chlorine 14) in the first electron energy level of chlorine 15) in the third energy level of sodium Classify the.
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  1.1   Multiple-Choice Questions 1) Water, H2O, is an example of a(n) ________. A) chemical B) solid C) wave D) electric charge E) element 2) In this list, which substance can be classified as a chemical? A) salt B) sleep C) cold D) heat E) temperature 3) One example of a chemical used in toothpaste is ________. A) chlorine B) sulfur C) carbon dioxide D) calcium carbonate E) sugar 4).
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51) The element in this list with chemical properties similar to magnesium is A) sodium. B) boron. C) carbon. D) strontium. E) chlorine. 52) Identify the noble gas in the following list. A) helium B) nitrogen C) oxygen D) gold E) chlorine 53) Semiconductors are located in the periodic table on (or in) the A) left side of the table. B) right side of.
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2.3   True/False Questions 1) Air is a heterogeneous mixture. 2) Black coffee is a homogeneous mixture. 3) A liquid has its own volume and shape. 4) A compound only contains one type of atom. 5) Iron rusting is a chemical change. 6) Ice melting is a chemical change. 7) The heat of fusion is greater than the.
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3.2   Short Answer Questions Write the electron arrangement for the atom shown. 1) Sodium 2) Chlorine 3) Argon 4) Sulfur 5) Magnesium 6) Phosphorus Write the symbol from the element name. 7) The symbol for sodium is 8) The symbol for lead is 9) The symbol for mercury is 10) The symbol for copper is 11) The symbol for sulfur is 12) The symbol.
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41) The maximum number of electrons that may occupy the third electron energy level is A) 2. B) 8. C) 10. D) 18. E) 32. 42) What is the element with the electron arrangement 2,8,7? A) Be B) Cl C) F D) S E) Ar 43) What is the electron arrangement for aluminum? A) 2,8,3 B) 2,8,5 C) 2,8,7 D) 2,8,8 E) 2,8,10 44) What is the electron.
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2.4   Matching Questions Identify the physical state(s) corresponding to labeled regions on the cooling curve of water shown below. A) solid and gas B) solid C) liquid and solid D) gas E) liquid and gas F) liquid 1) A 2) B 3) C 4) D 5) E Match the state(s) of matter with each of the following descriptions of a substance. A)solid B) gas C) liquid.
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