Name:  ______________________________                                                period:  _______

 

Ch. 5 & 11 conversion factors & light              test     [65 points]                   honors 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.               Your answers have to start and end of the same side of a paper, to be done in sequence, and clearly identify the question done; otherwise, you will lose points.  Attach this sheet to the front of your exam.

 

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  [15 points]

 

a.  76 mm  =  ___ km

 

b.  35.0 m2  =  ___  mm2

 

c.  5.0 m3 / sec  =  __  L / hr

 

2.  A 25.0 g copper cylinder has a diameter of 25.0 mm.  The density of copper is 8.9 g / mL.  What is the height of the cylinder in meters ?   [15 points]

 

3.  solve  [10 points]

 

a.  2.000  /  11.0  = ___

 

b.  5.678  +  1.24  =  ____

 

c.  0.0002030  *  123  =  ___

 

d.  write 28,030,000. using scientific notation:  _____________ 

 

e.  write 0.0003090 using scientific notation:  ____________

 

4.   light   [10 points]

 

a.  comparing:  yellow, violet, and radiowaves - which type of light has the longest wavelength ?  ______

 

b.  comparing :  gamma, orange, and microwave – which type of light has the lowest frequency ?  ______

 

c.  comparing:  blue, orange, green – which type of light of light has the highest energy ?  ________

 

d.  based on your reading assignment,

i) define / describe the term “quantized” 

ii)  describe the experimental evidence that supports this idea

 

5.  solve  [15 points]

 

a.  if λ = 755 cm, then f =  __

 

b.  if f = 25 kHz, then E =  __ 

 

c.   if λ = 755 nm, then E = __