CHEM 1100 PRACTICE TEST QUESTIONS AND ANSWERS

CHEM 1100 PRACTICE TEST
QUESTIONS AND ANSWERS
Which of these substances is/are not an organic compound?
I. Alcohol
II. Asprin
III. Gasoline
IV. Table Salt - ANSWER- IV. Table Salt -- because it does not contain both hydrogen
and carbon, when dissolved in water, table salt dissociated into ions other than
hydrogen and carbon, making it an inorganic compound.

What theory is utilized in the prediction of molecular shapes? - ANSWER- VSEPR
Theory: Valence Shell Electron Pair Repulsion Theory, a model used in chemistry to
predict the geometry of individual molecules from the number of electron pairs
surrounding their central atoms.

Which of the following molecules will have a trigonal planar electron geometry and a
bent molecular geometry?
I. PCl3
2. H2O
3. C2H2
4. CH3Cl
5. SO2 - ANSWER- SO2

Which of the following is not an alkane?
1. C3H8
2. CH4
3. C2H2
4.C6H14
5.C4H10 - ANSWER- C2H2, because it does not follow the general formula of an
alkane (C(sub)H, H (sub) 2(n+2))

True or False: Sodium is the most stable as a positively charged ion. - ANSWER- True

Which of these alkanes would be liquids at room temperature?
I. C2H6
II. C3H8
III. C5H10
IV. C6H14
V. CH4 - ANSWER- III and IV (Pentane and Hexadecane)