Using Concept Mapping As a Visual Problem-Solving Strategy in General College Chemistry

Appendix C: Chemistry Diagnostic Quiz

(Ott, Smith, Pugh) Name ______Instructor ______

This quiz is for diagnostic purposes only – it will not be included as part of your grade for this course. You may use a periodic table and your calculator. Answer each of the following questions to the best of your ability by circling the correct answer. Write any calculations or other work on these test sheets.

1. Which atom description represents an (A) Nucleus n = 1 n = 2 n = 3 n = 4 ion with an electrical charge of +1? 3p , 4 n 2 e (B) Nucleus n = 1 n = 2 n = 3 n = 4 11p, 12n 2 e 8 e 1e

(C) Nucleus n = 1 n = 2 n = 3 n = 4 29p, 35n 2 e 8 e 18e 1e

(D) Nucleus n = 1 n = 2 n = 3 n = 4 8 p, 10n 2 e 6 e

2. Which represents the electronic (A) 1s22p83d7 structure of the element having the (B) 1s22s83p7 atomic number 17? (C) 1s22p22d63f7 (D) 1s22s22p63s23p5 (E) 1s22s22p42d23s23p43d1

3. The element X occurs naturally to the (A) 12.2 extent of 20.0% 12X and 80.0% 13X. (B) 12.5 What is the atomic mass of X? (C) 12.8 (D) 13.0

4. The normal boiling point of SO2 is (A) Ammonia has the greater vapor 263.1 K and that of NH3 is 239.7 K. pressure. At –40 °C which would you predict? (B) Sulfur dioxide has the greater vapor pressure. (C) The vapor pressures would be equal. (D) The vapor pressure of NH3 is 760 mmHg. (E) The relative vapor pressures are not predictable from the data given.

5. In the phase diagram, which (A) B to A transition represents the (B) D to B condensation of a gas to a liquid? (C) C to D

1 (D) A to D A B P C D T

6. Which of these is a nonpolar H molecule? C O (A) H

(B) H O H

F F C C (C) F F

(D) I Br

7. Which element in this periodic table will form an (A) E oxide Y2O3? (B) G Main Groups (C) J Group Numbers 1 2 3 4 5 6 7 8 (D) L First Period D E (E) R Second Period G J K L M Third Period Q R T X Z

8. When an electric discharge is passed (A) BCl through boron trichloride a new (B) BCl2 compound is formed. What is its (C) BCl3 simplest formula if on analysis it is (D) B2Cl3 shown to contain 0.0878 g of chlorine and 0.0131 g of boron?

Atomic Molar Masses B 10.8 g/mol Cl 35.5 g/mol

9. What is the molarity of a solution (A) 0.0290 M containing 11.7 g of NaCl in 400 mL (B) 0.500 M

2 of solution? (C) 2.92 M (D) 5.00 M Molar Mass NaCl 58.5 g/mol

10. If 7.30 g of HCl and 4.00 g of (A) 10.7 NH3 are mixed, how many grams of (B) 11.3 NH4Cl can be formed? (C) 12.6

HCl(g) + NH3(g)  (D) 13.3 NH4Cl(s) Molar Masses HCl 36.5 g/mol NH3 17.0 g/mol NH4Cl 53.5 g/mol