Lab Safety Rules & Review

When should you wear goggles?

ANYTIME chemicals, heat, or glassware are used! NO EXCEPTIONS

Which is appropriate for laboratory activities? Avoid open-toed shoes and loose, baggy clothing ? ?

Goggles are a MUST!! Apron should be used to protect clothing. All chemicals in the laboratory are to be considered dangerous Handle with extreme care Goggles are a MUST!! Apron should be used to protect clothing.

Keep hands away from face, eyes, mouth and body while using chemicals. Use the eye wash to rinse clear water into the eye. Open the eye by turning the eyelid out.

Report any accident or injury to the instructor immediately If blood is involved do not touch! No accident is trivial!

Shower is only used when chemicals or fire has covered the person

Perform only the experiments told to do by the teacher Never do anything in the laboratory that is not called for in the laboratory procedures or by the teacher

Do not eat, drink, or chew gum in the laboratory

Never eat or drink anything from laboratory equipment

Never use your mouth suction to fill a pipet Use a rubber bulb or a pipet pump

Do not touch, taste, or smell any chemicals unless specifically instructed to do so by the teacher. When asked to smell a chemical, do not place your nose directly over the chemical.

Use your hand to “waft” the smell toward your nose. Instead, Use your hand to “waft” the smell toward your nose.

Always be careful when handling hot glass. It may not appear to be hot.

and others that maybe nearby When heating test tubes, always point them away from your body and others that maybe nearby

Never return unused chemicals to the original stock container Never return unused chemicals to the original stock container. Instead, follow teacher instructions for proper disposal of excess chemicals

When mixing acid and water, always add the acid to the water NOT the water to the acid

Be prepared for your work in the laboratory Be prepared for your work in the laboratory. Read all procedures thoroughly BEFORE entering the laboratory

Never fool around in the laboratory Never fool around in the laboratory. Horseplay, practical jokes, and pranks are dangerous and prohibited

At the end of the laboratory activity, clean up your work station and leave the laboratory in a responsible manner.

Identify the following pieces of lab equipment.

Safety Review

Indicate whether the following statements are true or false.

Your teacher should always be present when you are doing a lab.

You may eat during lab.

Always point a test tube away from you and towards others.

It is okay to use chipped or broken glassware as long as you are careful.

Only severe accidents need to be reported to the teacher.

Safety goggles must be worn anytime you are using chemicals, even when you are cleaning up.

To dilute a concentrated acid, pour some water into it.

Never leave a lit burner unattended.

It is okay to use chipped glassware, as long as the chip is small.

All chemicals in the lab should be considered dangerous.

Work areas should be kept clean and neat.

It is okay to return unused chemicals to their original containers.

It is alright to drink from lab glassware as long as it looks clean.

All unauthorized experiments are prohibited.

To identify a substance in the lab, put a little on your finger and touch the tip of your tongue with it.

Hot glass looks the same as cold glass.

You should use the palm of your hand to determine when something you have heated has become cool enough to pick up.

Wire gauze should be used with a ring and ringstand whenever you are heating a beaker or flask.

Bunsen burners should be turned off whenever you are finished using them.

Personal eyeglasses provide as much protection as safety glasses.

Playing in the lab in never permitted.

To mix an acid with water, pour A. the water into the acid. B To mix an acid with water, pour A. the water into the acid. B. the acid into the water. C. small amounts of each by turn into a third container. D. the smallest amount of liquid into the largest amount.

After completing an experiment, all chemical wastes should be A After completing an experiment, all chemical wastes should be A. left at your lab station for the next class. B. disposed of according to your instructors directions. C. dumped in the sink. D. taken home.

In a laboratory, the following should not be worn, A. loose clothing. B. dangling jewelry. C. sandals. D. all of the above.

You should only taste substances in the lab if A You should only taste substances in the lab if A. your lab instructions tell you to. B. your teacher instructs you to do so. C. you think you know what it is. D. you dissolve it in water first. E. both a & b

If a fire erupts in the lab, immediately, A. notify your teacher. B If a fire erupts in the lab, immediately, A. notify your teacher. B. run for the fire extinguisher. C. throw water on the fire. D. open the windows.

You are heating a piece of glass and now want to pick it up You are heating a piece of glass and now want to pick it up. You should A. use a rag or paper towels. B. pick up the end that looks cooler. C. use tongs. D. pour cold water on it.

After heating a flask, it is best to A After heating a flask, it is best to A. cool it by placing in cold water. B. placing it on a insulating pad or a hot pad– not on the table itself C. stand it on the table to cool. D. test its temperature by touching it with your hand.

When working with chemicals, biological specimens, and other lab substances, always A. treat your hands with skin lotion. B. wash your hands thoroughly with soap and water. C. wipe your hands on a towel. D. wipe your hands on your clothes.