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): 6.1A: demonstrate safe practices during laboratory and field investigations as outlined in the Texas Safety Standards. 6.1B: practice appropriate use and conservation of resources, including disposal, reuse, or recycling of materials. 6.4B 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.

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

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

Johnny was a Chemist; Johnny is no more. What he thought was H2O Was H2SO4

If instructed to do so by the teacher you may hold the chemical away from you and waft the fumes towards you

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

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

T. Trimpe 2008 http://sciencespot.net/ What's Wrong? Lab Safety Challenge #1 T. Trimpe 2008 http://sciencespot.net/

Image: http://morrisonlabs.com/lab_safety.htm 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 wear safety goggles when doing an experiment 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. Don’t leave a flame unattended. Image: http://morrisonlabs.com/lab_safety.htm

T. Trimpe 2008 http://sciencespot.net/ What's Wrong? Lab Safety Challenge #2 T. Trimpe 2008 http://sciencespot.net/

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

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

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

1. R A W E O L G E G S G WEAR GOGGLES 2. F W T A, not F W F H I The answers are ... 1. R A W E O L G E G S G 2. F W T A, not F W F H I 3. S H A W N H A S D 4. L O F L W O I E C R D I T O N S 5. O D T N’ O L F O R U O N A D WEAR GOGGLES WAFT, not WHIFF WASH YOUR HANDS FOLLOW DIRECTIONS DON’T FOOL AROUND

Challenge 1 General Science Symbols L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

Images from http://www.cpsc.gov/CPSCPUB/PUBS/NIOSH2007107.pdf Flammable Explosive Corrosive Poison Images from http://www.cpsc.gov/CPSCPUB/PUBS/NIOSH2007107.pdf

Challenge 2 General Science Symbols L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

Biohazard Radioactivity Oxidizing Fire Extinguisher Images from http://chemistry.about.com/od/healthsafety/ig/Laboratory-Safety-Signs/

1 2 3

3 1 2

1. Being prepared to participate in lab means you should:  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?

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?

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?

1. Which of the 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/