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AREA DE CIENCIAS NATURALES Y EDUCACIÓN AMBIENTAL
Teacher: Maristella Álvarez Llanos

1.    Students will work individually on some experiments, while other experiments will be done with partners or groups. For partner or group work each student should interpret data and answer questions separately unless directed otherwise.
2.    Be prepared to work when you arrive at the laboratory.Familiarize yourself with the lab procedures before beginning the lab.
3.    Carefully follow directions, both written and oral. Do only the steps described in the procedure of the experiment or that are described and/or approved by the teacher. If you are in doubt about any procedure, ask your teacher for help.
4.    Everyone should be alert and proceed with caution at all times in the laboratory. Takecare not to bump another student and to remain at your lab station while performing an experiment. An unattended experiment can result in an accident.
5.   Laboratory coats are required for all the laboratory practices in order to avoid staining or ruining your clothing.
6.    Do not engage in horseplay such as tickling, throwing objects, squirting water, etc. Some of the most serious labaccidents have resulted due to this type of behavior. Misbehavior such as horseplay could result in your dismissal from the classroom and you may not be allowed to participate in future labs and activities.
7.    If you cut yourself, spill a chemical on yourself, or receive a burn by touching a hot object, run cold water over the affected area, and you or your partner notify your teacher immediately.8.    Learn the location of the eye wash fountain and/or water faucets in your school lab. If a substance is splashed in your eyes, immediately use the eye wash fountain or a water faucet to rinse your eyes. This should not happen if you are wearing goggles. Wear safety glasses/goggles at all times in the lab unless you are specifically told by your instructor that you do not need to wear them.9.    Do not taste, touch, or smell any reagents unless directed to do so by your teacher. When smelling chemicals or gases, use a wafting motion to direct the odor toward your nose.
10.    Extreme caution should be used when using a Bunsen burner. Keep your head and clothing away from the flame and turn off the burner when it is not in use. Long hair should be tied back to avoid it catching onfire. If your clothing should catch fire, stop, drop, and roll while your lab partner notifies the instructor. Before leaving the lab, check to see that all gas valves and hot plates are turned off.
11.    Keep flammable and combustible materials away from open flames. Some examples of flammable materials include alcohol, carbon disulfide, acetone and nail polish.
12.    When heating a substancein a test tube, be careful not to point the mouth of the test tube at another person or yourself.
13.    Use caution and the proper equipment to handle hot objects. Cool glass looks just the same as hot glass.
14.    Handle chemicals carefully. Check the label of all bottles before removing the contents. Take only as much as your need. Do not return unused chemicals to reagent bottles. Reportall spills or incorrect procedures to the teacher.
15.    Handle toxic or combustible gases or chemicals only under the direction of the teacher. Use the fume hood when using these materials or when directed to do so.
16.    Know the correct procedure for mixing acid solutions. ALWAYS add the acid slowly to the water. Never add water to a large amount of acid.
17.    Never handle broken glasswith your bare hands. Use a brush and dustpan to clean up broken glass. Dispose of the glass as directed by your teacher. Record and report all breakage or loss of apparatus to your teacher.
18.    Breakage fees for glassware and equipment broken due to misuse will be charged to the student(s) responsible for the broken item(s) at the replacement cost.
19.    Keep insoluble waste material out of...