1 AP Chemistry Lab Safety Rules AP Chemistry Monta Vista High School.

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Presentation transcript:

1 AP Chemistry Lab Safety Rules AP Chemistry Monta Vista High School

2 The laboratory is a place for serious work. Maintain a wholesome, businesslike attitude at all times. Points will not be given for following the rules, but points may be lost by not following them.

3 Never, under any circumstances, attempt unauthorized experiments. Accidents and trouble will be avoided by following this simple rule.

4 Always wear protective goggles when in the laboratory from the moment you enter the lab to collect materials until the time you have finished cleaning up. Contact lens wearers must know the added dangers of contact lenses.

5 Any accident involving even a minor injury must be reported to the instructor at once. Beware of hot glass, which is indistinguishable from cold glass. Watch for small chips and cracks on glassware.

6 All books, coats, and other personal effects should remain separate from the experiment area. As a common practice, please put backpacks under tables during lab days.

7 Do not touch, taste, or smell chemicals unless directed to do so. When observing the odor of a substance, do not hold your face directly over the container. Fan a little of the vapor toward yourself by sweeping your hand over the top of the container (a.k.a. wafting.)

8 When heating a test tube, start heating gently by moving the tube in and out of the heat source. Be aware of how easily liquids start to boil. Do not point your test tube at your neighbor or yourself when heating substances therein. A suddenly formed bubble of vapor may eject the contents violently and dangerously.

9 Know the location of the fire extinguisher, fire blanket, and eyewash in the laboratory. Know how to use the sink as an eyewash. As a rule, wash eyes for 15 minutes. Fire blanket may be used to smother fires or act as a dam for spilled liquids. Keep the goggle cabinet neat. Also know the location of trash, recycling containers and broken glassware container.

10 When diluting concentrated acid, pour the acid slowly and carefully into the water with constant stirring to dissipate the heat of solution that can cause the solution to boil and splatter. Never add the water to the acid. Remember AAA (always add acid to water)

11 If an acid or other chemical is spilled on your skin, wash it off immediately with water. If an acid or base is spilled on the counter or on your clothing, first inform the instructor, then neutralize it and then wipe it up with water. – Acid on clothing…use baking soda (a weak base) to neutralize. – Base on clothing…use vinegar (a weak acid) to neutralize.

12 Listen to teacher direction for waste disposal. ONLY acids/bases can go down the drain. Solids and other liquids will need special disposal instruction.

13 The electronic balances are expensive and somewhat fragile. Do not press on balance pan (they are not designed to move). Never place chemicals directly on balance pans, since they chemically react with some of the salts we use in class. Clean the balance of any spilled material when you are finished.

14 Keep an eye on your neighbor while in the laboratory to see that she or he is also obeying the rules. The accident that harms you may not be your own.

15 Keep your apparatus and lab station clean always. Wipe up spills since YOU know what those spills are; acid and water look the same to the next student using that station. The student who picks up and sets up the apparatus needs to return the apparatus to the same place.