CHEM 3: Quiz 1—Fall 2014
Name:______________________________
Syllabus:
1. ___True or False? The iclicker questions given in lecture will be graded for credit. ONLY offered
for participation points.
2. ___True or False? The weekly, online problem sets turned in LATE will be marked down 30%.
Problem sets NOT accepted for late credit at all.
3. When are Professor Levi’s office hours?
SHOW YOUR WORK FOR PARTIAL CREDIT
Basic Math Skills:
4. Simplify the expression below as much as possible:
𝟏𝟎−𝟒 ∙ 𝟏𝟎𝟔
=
(𝟏𝟎−𝟑 )𝟑
5. Solve the equations below for x:
a.
100 ∙ x − 50 = 200
Scientific Notation:
6. Convert each number below into PROPER scientific notation:
a. 1,940,000,000,000 = ____________________________________
b. 0.000000407 = _________________________________________
7. Convert each number below into STANDARD notation:
a. 3.78 x 10-4 = ___________________________________________
Significant Figures:
8. How many significant figures are in each measurement below:
Number of Significant Figures?
a. 0.01050 s
_________________________
b. 750 mL
_________________________
c. 42.0 g
_________________________
9. Perform the calculations below and report the final answer with the proper number of
significant figures.
Assume all numbers represent measured quantities and are NOT exact numbers or counting numbers.
a. 19.98 – 7.4 = ____________________
b.
842.5 ÷ 10.0 = __________________
Unit Conversion:
10. Perform each conversion below. Report the final answer in PROPER scientific notation.
a. 349 nm = ___________________ m
b. 4 x 10-3 s = __________________ µs
c. 1.29 x 104 mL = ________________ L