Ch. 1, 2, & 25   measurement, atoms, molecules, & organic chemistry  test  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.  [100 points]

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.  solve   [10 points]

a.  2.0 + 3.00  =  _______

b.  27  -  3.0  =  ________

c.  2.0  ÷  3.00  =  ______

d.  0.00104  *  1.3   =   __________

e. 

2.  solve   [10 points]

a. 

b.  A 575 g object has an acceleration of 89 cm / s² and moved 2.1 * 10⁵ cm.  How much work (in kJ) was done ?   [hints:  Joules = J =   and  work = mass * acceleration * displacement]

3.  A 35 g cylinder has a radius of 45 mm and a density of 7.0 g / mL.  What is the length, in meters, of the cylinder ?  [hint: volume of a cylinder = π r2 l;  10 points]

4.  pick one question & identify your choice; if you do both, your score = lowest score.  [10 points]

a.  Describe the results of Rutherford’s experiment and its interpretation regarding the atom. 

b.  define the terms:  physical change  &  chemical change

5.  fill-in the below table  [10 points]

6.  fill-in the below table  [10 points]

7.  What is the name (not symbol) of the atoms and the number of each atom in the a molecule of  __.  [10 points]
a.  hydrogen peroxide contains:  ______________________________________

b.  Pb₃ (PO₄ )₂   contains:  _____________________________________________

8.  Write the condensed structural formula for  ___.  [10 points]

a.  propane:  __________________________

b.  decane:  ____________________________

c.  hexane:  ____________________________

9.  Draw / sketch 3 isomers of C₃ H₈ O and identify the functional group in each isomer.  [10 points]

10.  Draw / sketch    [10 points]

a.  carboxylic acid with ethyl group(s)

b.  ester with methyl group(s)

c.  alcohol with butyl group(s)

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Ch. 1, 2, & 25   measurement, atoms, molecules, & organic chemistry  retest           AP Chem

1.  solve   [10 points]

a.  0.00270  +  0.021  =  _______

b.  1.2557 * 10⁴   -  3.73 * 10²   =  ________

c.  24  =  ______

d.  0.00104  *  1.3   =   __________

e. 

2.  solve   [10 points]

a. 

b.   For the reaction, H₂  +  O₂   -->  H₂ O, the  

rate  =  k [H₂ ] [O₂ ]^1/2

if the rate is 2.5 μM / second, [H₂ ] = 2.0 mM and [O₂ ] = 5.0 mM, then what is the value and units of the rate constant, k ?

3.  A 125 g cylinder has a radius of 45 mm and a density of 5.0 g / mL.  What is the height, in meters, of the cylinder ?  [hint: volume of a cylinder = π r2 h;  10 points]

4.  Describe the results of Rutherford’s experiment and its interpretation regarding the atom.  [10 points]

5.  fill-in the below table  [10 points]

6.  fill-in the below table  [10 points]

7.  What is the name (not symbol) of the atoms and the number of each atom in the a molecule of  __.  [10 points]
a.  tin (IV) peroxide contains:  ______________________________________

b.  Be(NO₃ )₂   contains:  _____________________________________________

8.  Draw / sketch 3 isomers of C₃ H₆ O₂ .  [10 points]

9.  Draw / sketch / write    [20 points]

a.  ketone with ethyl group(s)

b.  ether with methyl group(s)

c.  ester with butyl group(s)

d.  the amino acid, alanine, contain a methyl, amino, and carboxyl group

e.  amide with proply group(s)