ch. 1, 2, & 25              measurement, atoms, & organic chem.  test   [60 points]      AP Chemistry

 

Academic Honesty:   The answers on this test are my own and I am using only the allowed set of notes as described in the syllabus.  I have not discussed the test questions with anyone before or during the test nor have I seen the test questions prior to the exam.  If you violate any of the preceding items or do not sign, your semester grade is a F.

 

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For problems involving calculations, show your work in an organized manner, include any relevant equation (or formula and conversion factor(s)), put the proper units in your calculations / answer, and have the proper number of significant figures in your answer.  Begin each problem  / question on a new side of paper.

 

1.  A 75 gram solid cylinder has a diameter of 25 mm and a density of 5.8 g / mL; what is its length in inches ?   [10 points]

 

2.  fill-in the blank.  [10 points]

 

a.  3.000 / 11.0  =  ________

 

b.  0.000103 *  2.030  =  ________

 

c.  125.28  +   28.4  =  _____

 

d.  13720.  =  _______  (in scientific notation)

 

e.  0.0001080  =  ______  (in scientific notation)

 

3.  fill-in the table.  [10 points]

 

symbol

# protons

# neutrons

# electrons

charge

Atomic mass

65Cu2+

 

 

 

 

 

 

47

 

 

+ 1

110

 

4.  fill-in the table  [10 points]

 

Chemical formula

Chemical name

Sodium carbonate

 

 

(NH4)2S

 

Sn3(PO4)4

 

P3Br7

Tetra-silicon nona-iodide

 

 

5.  what is the average atomic mass of nitrogen if the % abundance of:  14N = 85%; 15N = = 10%; 17N = ?  [10 points]

 

6.    sketch the condensed structural formula of 5 isomers of hexene.  [5 points]

 

7.  using R to represent a hydrocarbon, sketch the following functional groups:  [5 points]

a.  alcohol

b.  ether

c.  ester

d.  carboxylic acid

e.  aldehyde