The Laboratory and SI

Name _____________________________________
Date ______________________________
AP Chemistry
The Laboratory and SI
Report Sheet
Laboratory Safety
Read the laboratory safety section, on pages 1 through 3 of the laboratory manual, and answer the
following questions as true or false:
_____ 1. Only injuries requiring treatment should be reported to Mr. Gensits.
_____ 2. Even if an experiment appears not to pose any hazards, eye protection must still be worn.
_____ 3. A safety shower is located in the laboratory.
_____ 4. Sandals and canvas shoes are proper clothing for “safe” experiments.
_____ 5. Changes in laboratory procedure are encouraged without authorization to heighten student
_____ 6. Working alone in the laboratory is not permitted under any circumstances.
_____ 7. Discuss data with only Mr. Gensits, not with classmates.
_____ 8. Always wash your face, arms, and hands before leaving the laboratory.
_____ 9. Drinking, eating, and chewing are permitted outside the laboratory only.
_____ 10. A first aid kit is located in the stockroom.
_____ 11. Pouring acid over your hand is the accepted method for testing its strength!
_____ 12. Never taste or smell a chemical or solution unless Mr. Gensits specifically directs you
to do so.
_____ 13. If your data doesn’t look right, change it-no one will know.
_____ 14. If a chemical spill occurs (even if it is a small one), alert Mr. Gensits.
_____ 15. If a chemical spill requires you to use the safety shower, you should flood the affected area for
at least 5 minutes.
_____ 16. An eye wash is located in the laboratory.
_____ 17. If your skin is burned by a flame, treat it by covering it with a salve.
_____ 18. Do not place book bags or athletic equipment on the floor near the lab bench.
Le Système International d’Unités (SI Units)
1. Name the SI base unit for each of the following measurements:
a. length ____________________
d. temperature _________________
b. volume ___________________
e. pressure ____________________
c. mass _____________________
f. energy ______________________
2. Complete the following table:
e. _______________
6.72 x 106 J
1.2 mg
3.3 pg
1.2 x 10-3 g
b. _______________
4.3 x 10-6 amps
2.16 nm
c. _______________
7.6 x 10-3 L
g. _______________
1.99 x 10-12 g
1.7 kilowatts
4.21 dL
3. Convert each of the following using the definitions in Tables 1 and 2 and the factor-label
approach to problem solving. Show the cancellation of units.
a. 18.4 mg = ____________________ pg
b. 250 μL = ____________________ kL
c. 7.92 x 10-5 fs = ____________________ ns
4. Circle the unit in each of the following sets which expresses the larger quantity.
a. 1 kg or 1 lb
f. 1 qt or 1 L
b. 1 mL or 1 μL
g. 1 J or 1 kcal
c. 1 oC or 1 oF
h. 1 Pa or 1 atm
d. 1 μg or 1 ng
i. 1 m or 1 mm
e. 1 nm or 1 μm
j. 1 g or 1 oz
5. Do the following problems showing all work, units, and proper significant figures.
a. Indicate the weight of a woman weighing 126 pounds in grams.
b. Indicate the distance of 385 yards in kilometers.
c. Measure the diameter and length of a large test tube in centimeters.
diameter = ____________________
length = ____________________
Using the equation, V = πr2l, calculate the volume of the test tube in mL. (1 mL = 1 cm3)
d. Express the volume of a 2.00 L bottle of soda in milliliters and quarts.
e. The price of platinum is currently approximately $1021 per ounce. How much would
1.00 g of platinum cost?
f. It is estimated that the Four Corners Power Plant in San Juan County, New Mexico
released 12,449 tons of sulfur dioxide in 2009. What would be the average release in
pounds of sulfur dioxide in a given day (assume 365 days in a year)? What would this
amount be in kilograms/day?
g. An aspirin tablet weighs about 325 mg (5 grains). Express the total mass of aspirin in
a 100-tablet bottle in grams and ounces.