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What is WRONG with this picture????? A lab safety presentation from (ASIM) Alabama Science in Motion at the University of Montevallo.

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Presentation on theme: "What is WRONG with this picture????? A lab safety presentation from (ASIM) Alabama Science in Motion at the University of Montevallo."— Presentation transcript:

1 What is WRONG with this picture????? A lab safety presentation from (ASIM) Alabama Science in Motion at the University of Montevallo

2 This visual presentation is designed to give students and teachers an opportunity to discuss lab safety rules and issues that inevitably come up in the chemistry lab. It is our goal that “What is WRONG with this picture” will help foster cautious behavior and attentiveness to the detail and safety within your own lab or unique classroom configurations.

3 SPECIAL INFORMATION “NOTE” “NOTE” With the exceptions of NO GOGGLES AND NO APRONS, try to identify the physical errors and mistakes in these slides. Students purposely do not have these for this presentation.

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17 ANSWERS

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19 DO NOT Drink out of beakers or any glassware in the lab because of unknown substances previously contained in the glassware. DO NOT eat food or have drinks in the lab PERIOD!!!!!!

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21 NEVER use a fire extinguisher on a person! The chemicals used are extremely cold and could cause burns themselves. Plus carbon dioxide is an “exhaled gas” by our bodies, not a suitable substance for “inhalation”.

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24  Never wear open toed-shoes in the lab. Spills tend to run “off tables”, “down aprons”, or “simply gravity takes it from the mid-air to your feet”. No skin should be showing below the top of an apron.  All long hair should be tied up or bound with rubber bands and/or other means.  No loose articles should be on your person.

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26  NEVER leave a Bunsen burner unattended. If the flame goes out, the gas from your burner could reach another burner and cause a severe explosion!!!!  No horseplay or joking around. The lab is an extremely serious exercise and “bodily injury” can occur if your attitude and actions are not as “professional” as they should be.

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28 NEVER leave the lab table with a spill unattended or cleaned up. NEVER have different chemicals in such close proximity until an experiment is ready to be performed. NEVER leave glassware on table tops unless they are in their proper upright position or are stationary. (Beakers, glass rods and thermometers tend to roll off!) NEVER sit on lab tables. Powder residue and clear liquids may still be present.

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30 NEVER aim a test tube, hot or cold, at any one. Materials make accidentally be “ejected or expelled out” of the tube.

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32 NEVER, NEVER, EVER add water to an acid!!! A major exothermic reaction will occur with a splattering or splashing of chemicals. Remember: “Alphabetical”- Acid to Water (or AA – Add Acid). NEVER, NEVER, EVER add water to an acid!!! A major exothermic reaction will occur with a splattering or splashing of chemicals. Remember: “Alphabetical”- Acid to Water (or AA – Add Acid).

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34 NEVER use the same disposable pipet to transfer two or more different liquids. The major problem is contamination of the stock solution or prepared compound, but also an “unexpected reaction” could occur.

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36 NEVER pour solutions from laboratory glassware, or other transferable apparatus back into the stock solution bottles or containers! This is a major contamination problem!!!!!!!!!!! NEVER pour solutions from laboratory glassware, or other transferable apparatus back into the stock solution bottles or containers! This is a major contamination problem!!!!!!!!!!!

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38  NEVER try to pour solutions from “large” stock solutions into “small, unmanageable” cylinders or containers. Major spills or overflows will occur! Gradually pour out an estimated amount needed for your experiment into an “average beaker or container”, then make a smaller transfer with a funnel into the desired container with smaller proportions.

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41 NEVER take dangerous acids and bases with a high molar content that are meant to be transferred under a fume hood, back to your lab table! Liquids or crystals with noxious fumes need to be kept under the hood until they are needed for the actual experimentation! NEVER transfer dangerous chemicals from large to small containers with open skin.

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43 NEVER wear loose, revealing, open clothes in the lab. It is a personal safety hazard and a distraction to other students. NEVER wear loose, revealing, open clothes in the lab. It is a personal safety hazard and a distraction to other students. NEVER wear open-toed shoes. NEVER wear open-toed shoes. NEVER have loose strands or braids of hair. NEVER have loose strands or braids of hair. NEVER have glassware too close to the edge of the lab table. NEVER have glassware too close to the edge of the lab table. NEVER pour water into acid!! NEVER pour water into acid!!

44 POST PRESENTATION QUESTIONS What other areas of concern for safety in the lab should be addressed? How can students be more alert and aware of the rules and regulations in the lab? How can students help inform your teacher of possible dangerous situations and or accidents?

45 CREDITS R.K. “Rocky” White, Chemistry Teacher, Sylacauga High School, Sylacauga, Alabama Brenda Rinehart, Chemistry Teacher, Thompson High School, Alabaster, Alabama Rebecca Richardson, ASIM – University of Montevallo Chemistry Department, University of Montevallo Dr. Cheri Flow, Director of Upward Bound, University of Montevallo Students of the Summer 2003 Upward Bound Program – “Forensics Unit” (et al).

46 END OF PICTURE PRESENTATION


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