Lab Safety Lesson Objectives Explain and demonstrate standards

Lab Safety

Lesson Objectives: Explain and demonstrate standards for conducting safe laboratory and field investigations. Identify safety equipment and its use. Explain how to use safety equipment. Explain why safety is important in science. Practice appropriate use and conservation of resources, including disposal, reuse, or recycling of materials.

Essential Question: What tools and safety standards do scientists use in scientific investigations?

Language Objectives: Communicate lab safety procedures with small learning groups using content and academic vocabulary acquired through the use of pre-reading supports such as graphic organizers and visuals.

• • • Standards (TEKS): 6. 1 A: demonstrate safe practices during laboratory and field investigations as outlined in the Texas Safety Standards. 6. 1 B: practice appropriate use and conservation of resources, including disposal, reuse, or recycling of materials. 6. 4 B use preventative safety equipment, including chemical splash goggles, aprons, and gloves, and be prepared to use emergency safety equipment, including an eye/face wash, a fire blanket, and a fire extinguisher.

Be Prepared Read all instructions Listen carefully to directions Ask questions when you do not understand

Use Safety Equipment Properly

KNOW WHERE TO LOCATE THE FOLLOWING: • EYEWASH STATION • FIRE BLANKET • TWO EXITS • FIRE EXTINGUISHER SAFETY GOGGLES AND APRONS

Safety Goggles Are Not Optional

Failed to Wear Safety Goggles

Must wear safety equipment

Only handle materials after you have received instructions from the teacher

Do not eat in the science room

Johnny was a Chemist; Johnny is no more. What he thought was H 2 O Was H 2 SO 4

Do Not Smell Chemical If instructed to do so by the teacher you may hold the chemical away from you and waft the fumes towards you

Keep your area neat and orderly

Check glassware for chips and cracks

Point test tubes away from yourself and others

Wash hands and clean up your area

No Unauthorized Experiements

When I give the signal stop what you are doing

Hazard Diamond

CHEMICAL SAFETY This symbol appears to warn you that chemical can react with and destroy tissue and other materials.

Sharp Object

Biological Hazard Avoid organisms or other biological hazards such as bacteria, fungi, teeth, blood, tissues, etc. that might be harmful to humans.

Biological Hazards •

Electrical Hazard

Lab Safety Challenge #1 T. Trimpe 2008 http: //sciencespot. net/

What’s wrong? Identify 6 different safety concerns shown in the picture below. Image: http: //morrisonlabs. com/lab_safety. htm

The answers are … Don’t fool around during a lab. Always point test tubes and other items away from yourself and others when heating. Don’t eat or drink while in the lab. Keep hair and other flammable objects away from flames. Always wear safety goggles when doing an experiment Don’t leave a flame unattended. Image: http: //morrisonlabs. com/lab_safety. htm

Lab Safety Challenge #2 T. Trimpe 2008 http: //sciencespot. net/

What’s wrong? Identify 9 different safety concerns shown in the picture below. Image: http: //morrisonlabs. com/lab_safety. htm

The answers are … Always wear safety goggles during a lab. Don’t leave materials laying on the floor. Don’t smell directly from Don’t heat closed a container - WAFT. containers. Keep your lab area neat and clean. Don’t place lab materials Keep papers and other Unplug equipment near the edge of the table. flammable objects away from when not in use. flames. Clean up spills immediately Image: http: //morrisonlabs. com/lab_safety. htm

Science Safety T. Trimpe 2008 http: //sciencespot. net/

Can you unscramble all the phrases below? Hint: They are all related to safety. 1. R A W E OLGEGSG 2. F W T A, not F W F H I 3. S H A W O R U Y N H A S D 4. L O F L W O IECRDITONS 5. O D T N’ O L F O RUONAD

The answers are. . . 1. R AWEAR WE O LGEGSG GOGGLES 2. F WWAFT, T A, not F WHIFF WFHI not 3. S HWASH A W YOUR N H A SHANDS D 4. L O FFOLLOW L W O IDIRECTIONS ECRDITONS 5. O D TDON’T N’ O L F O AROUND RUONAD FOOL

Challenge 1 L. La. Rosa http: //www. middleschoolscience. com for T. Trimpe 2008 http: //sciencespot. net/

What does each Safety symbol stand for?

What does each Safety symbol stand for? Flammable Explosive Corrosive Images from http: //www. cpsc. gov/CPSCPUB/PUBS/NIOSH 2007107. pdf Poison

Challenge 2 L. La. Rosa http: //www. middleschoolscience. com for T. Trimpe 2008 http: //sciencespot. net/

What does each Safety symbol stand for?

What does each Safety symbol stand for? Biohazard Radioactivity Oxidizing Images from http: //chemistry. about. com/od/healthsafety/ig/Laboratory-Safety-Signs/ Fire Extinguisher

Identify the symbols below and explain what precautions you should take if you see them. 1 2 3

Give the name of the symbol and describe the hazard that it indicates is present. 1 2 3

Warm Up / Reflection 1. Being prepared to participate in lab means you should: a. _____ b. _____ c. _____ 2. What are two things you should not do in the science room unless you are told it is safe to do so? 3. Why should you hold a chemical away from you and waft the fume towards you if you have been instructed to smell it?

Warm Up / Reflection 1. Who is responsible for cleaning up when you finish your lab activity? 2. Before doing a science experiment in which you are using chemicals, you should put on _____ and _____. 3. What precautions should you take when using a lit candle?

Warm Up / Reflection 1. When you see something dangerous or hazardous, what should you do? 2. Explain why you shouldn't place a stopper on glassware containing chemicals unless you have been told to do so. 3. Why is it important to keep your work area neat and orderly during lab activities?

Warm Up / Reflection 1. Which precautions should you take when working with unknown chemicals? 2. You arrive to class, the door is open, but Mrs. Wolff is not in the room. What should you do? 3. You have read the lab instructions twice, but you are still unsure about what you are expected to do. What should you do?

Game to practice identifying symbols by name: http: //quizlet. com/2559520/spacerace/