Interest Grabber It is important to pay attention to warning labels when working with chemicals. Look at the safety symbols at the right. Section 2.3
Write a brief statement for each symbol explaining what actions you need to take to avoid a possible danger. Safety Symbols
Interest Grabber Answers Section 2.3
Interest Grabber Answers A.No flames, sparks, or exposed sources of heat should be present during an experiment. B. Waft fumes to you to avoid these from burning your lung tissue. C.Avoid getting corrosive chemicals on skin or clothing, or in the eyes. D.Tie back long hair and loose clothing, and put on safety goggles before using a burner. Section 2.3
Wear Protective Clothing Lab coats or Aprons Goggles Gloves as needed
Lab Rules First: Read all Directions for an experiment and follow directions. Never perform unauthorized or unsupervised labs or handle equipment without permission. Ask questions before you do something
Lab Rules continued When you design your own lab, make sure your lab procedure has been approved by your teacher. NEVER EAT, DRINK or Bring FOOD or water into the laboratory area.
Lab Rules continued Do not chew gum during a lab! REPORT ALL ACCIDENTS TO TEACHER IMMEDIATELY Report any fire to teacher and know where the fire extinguisher and fire blanket are located
Dress Code Rules Always wear goggles OVER EYES ( there will be a deduction in your Lab Participation grade if not worn.) 2 nd warning you will sit out. Wear protective clothing if necessary
Dress Rules Cont. Tie back hair and loose clothing Remove dangling jewelry that could contact chemicals or cause hazards.
Handling Glassware Handle all glassware with care Report all breakages, even chipped glassware to teacherDO NOT TOUCH BROKEN GLASS!! Make sure glassware is not near edges of the work table
Glassware Cont. Never heat glassware that is not fully dry or heat resistant (pyrex) Do not touch any glassware that has been on the hot plate with your unprotected hands. Use tongs or heat resistant gloves. NEVER drink from Lab glassware
Heating and Fire Safety Never reach over a flame or hot plate NEVER touch hot object with your bare hands Tie back long hair, loose clothing and put on safety goggles before using a burner.
Heating and Fire Safety Cont. Never heat chemicals without your teachers permission When heating a test tube point it away from people Heat the test tube at a 45 angle Not straight up Never Heat a closed container
Electrical Safety Do not use electrical equipment near water or if your hands are wet Use only three prong sockets Disconnect equipment not in use Do Not Use damaged equipment or frayed cords
Chemical Safety Do not let corrosive or poisonous chemicals get on your skin or clothing or in your eyes Never test for an odor by sticking your nose directly into or over the odorWaft THE ODER TO YOU!!
Chemical safety Cont. NEVER MIX CHEMCIALS TOGETHER FOR FUN!! Never touch, taste or smell a chemical that you do not know, for certain, that is not dangerous
Chemical safety Cont. Avoid spilling chemicalstell teacher if you spill anything except water. When using strong acids or bases, ALWAYS pour these into the water not vice versa. DO NOT pour water into the acid/base
End of Experiment Rules Follow your teachers directions as to disposal of chemicals. DO NOT POUR ANYTHING DOWN THE DRAIN without permission
End of Experiment Rules Your work area must be left clean and ready for the next group When the area is clean and dry, you may get with your lab group and complete your lab report.
End of Experiment Rules WASH YOUR HANDS AT THE END OF THE EXPERIMENT. Throw all paper towels in trash. There is to be no trash in the sinks or your group will loose points off the lab report.
End of Experiment Rules WE WILL NOT DISMISS WITHOUT THE ALL LAB AREAS CLEAN AND ALL MATERIALS PUT AWAY!!