lab safety. lesson objectives: explain and demonstrate standards for conducting safe laboratory...
TRANSCRIPT
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.
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.
KNOW WHERE TO LOCATE THE FOLLOWING: •EYEWASH STATION •FIRE BLANKET
•TWO EXITS •FIRE EXTINGUISHER
SAFETY GOGGLES AND APRONS
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.
What’s wrong? Identify 6 different safety concerns shown in the picture below.
Image: http://morrisonlabs.com/lab_safety.htm
The answers are …
Image: http://morrisonlabs.com/lab_safety.htm
Don’t eat or drink while in the lab.
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.
Keep hair and other flammable objects away from flames.
Don’t leave a flame unattended.
What’s wrong? Identify 9 different safety concerns shown in the picture below.
Image: http://morrisonlabs.com/lab_safety.htm
The answers are …
Image: http://morrisonlabs.com/lab_safety.htm
Always wear safety goggles during a lab.
Don’t leave materials laying
on the floor.
Clean up spills immediately
Don’t heat closed containers.
Keep your lab area neat and clean.
Unplug equipment when not in use.
Don’t place lab materials near the edge of the table.
Keep papers and other flammable objects away
from flames.
Don’t smell directly from a container - WAFT.
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
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
Images from http://chemistry.about.com/od/healthsafety/ig/Laboratory-Safety-Signs/
Biohazard Radioactivity Oxidizing Fire Extinguisher
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?
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?