Practice Test - Miniunit Alpha

  1. (23) Which of the following would be the correct molecular formula for a monosaccharide?

    a. C6 H12 O2 N
    b. C3 H6 O11
    c. C12 H22 O11
    d. C6 H12 O6

  2. (17) Grape juices have a pH range of 6.2 to 6.8, so they make up what type of solution?

    a. weak acid
    b. strong acid
    c. weak base
    d. strong base
    e. neutral

  3. (31) A protein consisting of 5 amino acids contains how many nitrogen atoms?

    a. 0
    b. 4
    c. 5
    d. 6

  4. (16) Ca(OH)2 dissolved in water will form (a,an)

    a. acid
    b. base
    c. salt

  5. (14) Atoms with one to three outer shell electrons will form which type of charge?

    a. positive
    b. negative

  6. (19) Bond formed by a transfer of electron from one atom to another is termed:

    a. ionic
    b. covalent
    c. hydrogen

  7. (19) C3H5OH molecule contains which type of bonds?

    a. ionic
    b. covalent

  8. (25) Examine figure below. This structural formula represents:

    a. fructose
    b. glucose
    c. starch
    d. sucrose
    e. maltose

  9. (20) The structural formula below is a pentane. How many hydrogen atoms are necessary to complete its structure?

    C-C-C-C-C
  |
  C
    a. 5
    b. 10
    c. 13
    d. 14
    e. 24

  10. (13) Which of the following represents a sulfur atom?

    a. Su
    b. S+
    c. S
    d. Na+

  11. (12) Atoms that lose their valence electrons will have a ____ charge.

    a. positive
    b. negative

  12. (11) CCl4 contains covalent bonds, therefore it is a (an):

    a. electrolyte
    b. nonelectrolyte

  13. (10) What is the correct molecular formula for the structure below?

    CH3CH2 CH2CHCHCH3?

    a. C6H14
    b. C6H10
    c. C6H12
    d. C6H12O6

  14. (9) What is the correct symbol for phosphorus?

    a. p
    b. K
    c. P
    d. Ph

  15. (8) In the element sodium, atomic number 11, there are how many shells?

    a. 1
    b. 2
    c. 3
    d. 4

  16. (7) All three isotopes of hydrogen have only one proton in them.

    a. true
    b. false

  17. (6) Isotopes are defined as atoms that have:

    a. the same atomic number and the same mass number
    b. different atomic numbers
    c. different mass numbers and the same atomic number

  18. (5) An atom has an atomic number of 12 and atomic mass of 23. How many protons does this atom have?

    a. 0
    b. 11
    c. 12
    d. 23

  19. (5) An atom has an atomic number of 12 and atomic mass of 23. How many electrons will be in its outer shell?

    a. 2
    b. 4
    c. 8
    d. none of these

  20. (4) The mass and charge of a neutron is:

    a. 1 amu and +1
    b. 1 amu and 0
    c. 2 amu and -1
    d. 0 amu and 0
    e. 2 amu and +1

  21. (3) The nucleus of an atom is negative charged and the electron cloud is positive charged.

    a. true
    b. false

  22. (1) One of the characteristics of living things is reproduction.

    a. true
    b. false

  23. (24) What group is found in the molecule:

      H   H
  |   |
H-C-C-C-H
  | " |
  H O H
    a. alcohol
    b. ketone
    c. aldehyde
    d. amine

  24. (27) What is the product during the complete hydrolysis of starch?

    a. glucose
    b. amino acids
    c. fatty acid
    d. glycerol
    e. glycerol and fatty acid

  25. (28) Which macromolecules contain the elements C H O N & usually S?

    a. lipids
    b. nucleic acid
    c. carbohydrates
    d. protein

  26. (26) Consider the following reaction:

    Sucrose + H20 -------> Glucose + fructose 
           "A"                    "B"
    This represents what type of reaction?

    a. oxidation
    c. hydrolysis
    b. reduction
    d. condensation

  27. (18) Given the formula for sulfuric acid (H2SO4) and the atomic weights of each element in this compound, which of the following will yield the correct molecular weight?

    a. H = 1 S = 32 0 = 16 49
    b. H = 1 X 2 = 2 S = 32 X 1 = 32 0 = 16 X 4 = 64 98
    c. H = 1 X 2 = 2 S = 32 X 4 = 128 0 = 16 X 4 = 64 194
    d. H = 1 X 2 = 2 S = 32 X 1 = 32 0 = 16 X 1/4 = 4 38

  28. (15) What ions will be formed when the acid HCl is placed in solution?

    a. H+ only
    b. Cl- only
    c. HCl
    d. H+ and Cl-

  29. (21) What is the correct molecular formula for C3 H8 O ?

    a. 
      H H H
  | | |
H-C-C-C-OH
  | | |
  H H H
    b. 
      H H H
  | | |
H-C-C-C-H-O
  | | |
  H H H
    c. 
      H H H
  " | |
  C-C-C-O
 /| | | |
H H H H H
    d. 
    O H H H
" | |/
C-C-C-H
| | |
H H H

  30. (22) Which molecule would contain a double covalent bond?

    a. C2H6
    b. C2H4
    c. C2H2
    d. C2H8

  31. (27) What is the product during the complete hydrolysis of fat?

    a. glucose
    b. amino acid
    c. fatty acid
    d. glycerol
    e. glycerol and fatty acid

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Last modified October 29, 1997.