Lab Safety  

I. Philosophy of Lab:

	A. Labs represent the "PROCESS" of learning 
            science.

	B. Lab averages count as 30% of the quarterly grade.
		1. They are graded on content.
		2. They are graded on neatness of appearance.

	C. Components of the Lab Report:
		1. Purpose- states the primary reason for doing 
                   the lab.
		2. Materials- a list of all the equipment necessary 
                   to do the lab.
		3. Methods- the instructions for the procedure of 
                  the lab.
		4. Data- a table or graph that records the results 
                  of the lab.
		5. Conclusions- states the outcome of the lab, 
                  including judgment of the hypothesis.

	D. Observations in the Lab: 
		1. Qualitative- be as descriptive as possible. (Use 
                   as many "safe" senses as possible).

		2. Quantitative- measure as accurately as 
                   possible.

		3. S.I. Unit- the internationally accepted unit of measure.

			a. Metric Prefixes
				milli- 1/1000
				centi- 1/100
deci- 1/10

deka- 10X
hecto- 100X
kilo- 1000X

b. Basic Metric Units
linear- measured along a line, meter, m
S.I. unit is the meter.

volume- the amount of space that matter occupies, liter, L
S.I. unit is the liter.

mass- the amount of matter in a substance, gram, g
				S.I. unit is the kilogram, kg.

				time- the continuously passing period 
measured by astronomical     
movement, second, s
				S.I. unit is the second.

	E. Converting units of measure

		1. Write the starting amount as a 
    FRACTION over 1 in parenthesis.

		2. Write the conversion factor as a 
    FRACTION in parenthesis to the right of 
    the starting amount. Make sure that the 
    bottom of the fraction has the same units 
    as the top of the starting amount fraction.

* Example: Convert 56 liters to milliliters.

56 L	1000mL				set-up
  		   1		   1L

56 L	1000mL			liters cancel out
  		   1		   1L 

 56		1000mL  = 56,000 mL	solve
  		  1		   1

II. Laboratory Rules

1. Take lab seriously.  Any inappropriate behavior will 
    result in dismissal from the classroom and an earned 
    zero for the lab grade. Remember, all classroom rules 
    still apply during lab.

2. Follow all and any lab directions correctly the first time.

3. Wear any and all safety apparel that is recommended 
    for each lab.

4. Maintain a clean and safe work area, (especially at the   
    conclusion of the class period).

5. Be aware of the locations of safety equipment in the lab, 
    such as the eyewash station, fire extinguisher, and fire   
    blanket.

6. Be aware of the safe escape routes from the lab in case 
    of a severe accident or fire.

7. Do your fair share if you are working in a lab group.

On a separate sheet of paper, convert the following, showing all work. Set up the problem properly.  You may use a calculator , if you have one.  

1. 236 L to mL.				2. 560,000 cm to km.

3. 0.4 kg to mg.				4. 8 hours to sec.

5. 1 year to hours.				6. 66 km to cm to inches.

7. 5 gallons to L to mL to cc.		8. 75 pounds to kg to g.

9. 77 years to hours to minutes.	10. 1 mile to km to mm.