Ch. 1, 2, 26  measurement, atom / molecules, & organic         test     [60 points]       AP Chem

 

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.              

 

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.

 

                                                                                                Signature:  ___________________

 

 

1.  fill-in the below table; compounds might be hypothetical.  [10 points]

 

Chemical formula

Chemical name

 

(NH4)2S

 

 

 

 

Sn(C2H3O2)4

 

 

 

 

P3I6

 

 

 

 

 

 

Aluminum oxide

 

 

 

Mercury (I) phosphate

 

 

 

2.  solve  [10 points]

a.  22.0  ÷ 7.0  =  _____________

 

b.  123.45  -  6.735  =  ____________

 

c.  200,261 has  ___  significant figures

 

d.  0.0002010 has  ___ significant figures

 

e.   0.0002090 using scientific notation is _________________

 

3.  solve  [10 points]

a.  5.0 nm / msec = ___ cm / minute

b.  if   , then k =  ____ (in terms of moles, L, & seconds)

4.  Write the condensed chemical formula of ___.   [15 points]

 

a.  an aldehyde with butyl group(s)

b.  an ester with ethyl group(s)

c.  an amide with methyl group(s)

5.  fill-in the below table  [15 points]

symbol

# protons

# neutrons

# electrons

charge

mass number

 

90Sr2+

 

 

 

 

 

 

 

 

 

 

28

 

 

 

+ 3

 

 60

 

 

 

 

 

 

86

 

- 3

 

210