CHM12 - LQ4

CHM12- LQ4a

I know, my score is not to be proud of but you can always learn from the mistake of others, as the saying goes. 

CHM12- LQ3

I know my score is not to be proud of but you can always learn from the mistake of others, as the saying goes. 

CHM12- LQ1

CHM12 - Lq5

CHM12 - Long Quiz 3 - 2nd Term - 20112012

just a little OT i have, chem 12 quiz 3.. prof. tapas, alam ko na sure
pass s'ya, pero hindi ba mas maganda kung sure pass tapos tataasan mo
pa kasi kaya nga may sure pass na profs ay para pang hatak sa mga
terrorista. meron pala dyang bonus question, di ko lang alam kung
anong no.

CHM12 - Final Exam - 4th Term - 20102011

This is departmental

CHM12 - Final Examination - 1st Term - 20102011

I - Multiple Choice

1. a

2. a

3. d

4. b

5. c

6. a

7. c

8. b

9. a

10. c

11. a

12. d

13. c

14. c

15. d

16. b

17. a

18. a

19. c

20. a

21. d

22. b

23. a

24. a

25. d

II- Problem Solving

1. 100.09 degree celsius

2. 2.35

3. 24.72 mmHg

4. 4.69

5. 45mL

CHM12 - Long Quiz 2 - 4th Term - 20092010

GENERAL CHEMISTRY                                                                             EXAM NO.2

TOPICS: Electronic Structure and the Periodic Table                     

I. Multiple Choice. Write your answers beside the each number. Use capital letters. Choose the letter of the best answer. Show computations (if applicable). NO SOULTION, NO CREDIT. (2 points each)

1. The Navy uses electromagnetic radiation of extremely long wavelengths to communicate with submerged submarines. The Navy's ELF (Extremely Low Frequency) systems emit 76 s^-1 radiation from facilities located in Wisconsin and Michigan. What is the wavelength of this radiation (in meters)?

A.     2.1 ´ 10^-7  m      

B.     3.9 × 10⁶ m       

CHM12 - Long Quiz 5 - 4th Term - 20092010

GENERAL CHEMISTRY                                                                             EXAM NO.5

TOPICS: Aqueous Solutions and Colligative Properties                

*Write your answers in yellow booklet.

*Submit the Take Home Exam on June 26, 2010, Saturday at 9 AM at N404.

*Bring the Course Syllabus of CHM12 for Course Syllabus.

I. TRUE or FALSE. Right minus wrong. Write T if the statement is TRUE and F if the statement is FALSE. (20 pts)

1. Water is considered as a universal solvent.

2.  Strong electrolytes dissociate in water completely.

3. If a solute is nonvolatile the vapor pressure of its solution is always less than that of the pure solvent.

4.  A solution is less disordered than that of a pure solvent.

5. The solute must be nonvolatile for the boiling-point elevation and vapor pressure lowering.

CHM12 - Long Quiz 3 - 4th Term - 20092010

GENERAL CHEMISTRY                                                                             EXAM NO.3

TOPICS: Covalent Bonding                    

I. Multiple Choice. Write your answers beside the each number. Use capital letters. Choose the letter of the best answer. (1 point each)

1. It is a pair of electrons that is shared between two atoms.

A.  covalent bond     D. an ionic bond

B.  lone pair            E. coordinate bond

C.  double bond

2. All of the following Lewis structures of nitrogen oxides are possible EXCEPT

A.  N₂O.

B.  N₂O₄.

C.  N₂O₃.

D.  N₂O₅.

E.  All of the above are correct structures.

3. Formal charge is _________.

A.  the absolute value of the charge on a polyatomic anion or cation.

B.  the difference between the number of lone pairs of electrons and shared pairs of electrons on any atom in a Lewis structure.

C.  the difference between the number of valence electrons and the number of protons in any given atom.

D.  equal to the number of valence electrons in a free atom minus the number of shared in covalent bonds.

E.  the difference between the number of valence electrons in a free atom and the number of electrons assigned to the atom in a Lewis structure