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Chemistry: Unit 2
This page was last updated on 15-Jun-02

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Choose the best answer for each question.  At the end of the quiz, click on the "Get Score" button and your quiz will automatically be graded.  The correct reponses will appear in the box underneath your score.

This test has 25 questions and covers the second of eight units in General Chemistry.  Good luck!

1. The octet rule refers to every atom or ion having:
8 protons
8 neutrons
an incomplete outer (valence) shell
a complete outer (valence) shell

2. When magnesium reacts with bromine, each magnesium atom ____ electon(s) and each bromine atom ____ electron(s)
gains 2, loses 1
loses 2, gains 1
gains 2, loses 2
loses 1, gains 2

3. The hydrogen to chlorine bond in HCl is:
polar covalent
nonpolar covalent
ionic
hydrogen

4. The sulfur to sulfur bond in S8 is:
polar covalent
nonpolar covalent
ionic
hydrogen

5. The potassium to iodide bond in KI is:
polar covalent
nonpolar covalent
ionic
hydrogen

6. The total number of atoms in Ba3(PO4)2 is:
5
8
12
13

7. One mole of carbon dioxide contains ___ oxygen atoms.
one mole of
two moles of
one half mole of
no moles of

8. What is the name of F-?
Fluorine ion
Fluorine (I) ion
Fluorine
Fluoride ion

9. Which of the following is the correct formula for a phosphide ion?
P3+
P3-
P5+
P5-

10. What is the formula for magnesium oxide?
Mg2O
MgO2
MgO
Mg2O2

11. What is the formula for sodium sulfide?
NaS2
Na2S
NaS
Na2S3

12. What is the formula for aluminum bromide?
Al3Br
AlBr3
Al2Br3
Al3Br2

13. What is the correct name for MgF2?
Magnesium difluoride
Magnesium (II) fluoride
Magnesium fluoride
Dimagnesium fluoride

14. What is the correct formula for ferric sulfide?
Fe2S3
Fe3S2
Fe3S
Fe2S

15. What is the correct formula for chromium (II) chloride?
Cr2Cl3
Cr2Cl
CrCl2
CrCl4

16. What is the correct name for Cu3P2?
Copper (III) diphosphide
Copper (III) phosphide
Copper (I) phosphide
Copper (II) phosphide

17. What is the correct name for PCl5?
Phosphorous Tetrachloride
Phosphorous (V) chloride
Potassium (V) chloride
Phosphorous Pentachloride

18. What is the correct formula for dinitrogen tetroxide?
N4O2
NO2
N2O4
NO4

19. What is the correct name for NaC2H3O2?
Sodium dichromate
Sodium oxalate
Sodium hydrogen carbonate
Sodium acetate

20. What is the formula for potassium sulfate?
K2SO3
K2SO4
KSO4
K2S

21. What is the molar mass of Fe2(SO4)3?
207.77 g/mol
335.76 g/mol
399.91 g/mol
271.91 g/mol

22. How many g is 0.485 mol of Au(CN)3? The molar mass of Au(CN)3 is 275.03 g/mol.
567 g
275 g
133 g
0.00176 g

23. The pressure of 1000 mm Hg is equal to one atmosphere
True
False


24. Melting and freezing occur at the same temperature.
True
False


25. A catalyst lowers the amount of energy released in an endothermic reaction.
True
False


Score =
Correct answers:



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