welcome to the wonderful world of chemistry miss qumsieh
TRANSCRIPT
Welcome to the wonderful world of Chemistry
Miss Qumsieh
Today’s agenda:
*Welcome and introduction/expectations.
*Chem 11 course outline.
*Chem 11 textbooks.
*Lab safety procedures/safety contract.
*E-mail permission slips
Never attempt Unauthorized Experiments in the Lab!
Follow the Approved Procedure for the Experiment! Mark
Iannone
1. Follow all instructions carefully. Use special care when you see the word CAUTION.
2. Never do laboratory work unless your teacher is supervising you.
3. Always follow the directions given by your lab manual or by your teacher.
4. Know the location of ALL safety equipment in the laboratory.
5. Always wear protective eyewear and clothing when instructed to by your teacher.
6. If there is equipment on your bench or desk, let the teacher know before handling or moving it.
6. NEVER run, push, or engage in horseplay of any kind in the laboratory.
7. Never eat or drink in the laboratory.
8. Report any accident, spill, or breakage to you teacher immediately.
9. Always clean your work area and equipment at the end of the lab period.
10. Dress properly for the laboratory.a. Roll long sleeves above the wristb. Don’t wear loose-fitting sleeves or bulky outerwear.c. Tie back long hair.
d. No sandals or open-toed shoes
11. Use care with electricity.
a. Electrical cords are kept away from the edge of the table where people passing by can catch them.
b. Always make sure that your hands are dry before you handle any electrical equipment.
c. Always use electrical equipment in a completely dry area.
d. Pull plugs from the base of the plug, NOT the cord.
12. Be careful with laboratory glassware.
a. Always check glassware before you use it. Never use glassware that is chipped or cracked. Show this glassware to your teacher.
b. Never use your bare hands to clean up broken glassware.
c. Always be careful when carrying glassware to and from your work area.
13. Be very careful with heat or fire.
a. Always use tongs to handle hot containers, objects, or materials.
b. Always heat liquids slowly and point open test tubes away from others in the lab.
c. Always turn burners and hotplates off when they are not in use.
d. Never allow flammable materials such as alcohol near an open flame.
e. Notify your teacher in the case of a burn. Minor burns should be soaked immediately in cold running water.
14. Use extreme care when working with chemicals.
a. Always treat the chemicals in the laboratory as hazardous.
b. Never taste substances in the laboratory.
c. Wear goggles whenever you are heating chemicals.
d. If you spill any chemicals on your skin, wash your skin with running water.
e. If chemicals splash in your eyes, use an eyewash.
f. Notify your teacher immediately of any chemical spills or accidents.
15. Disposal of chemicals.
a. Chemicals that are identified as safe by your teacher can be poured down the sink and rinsed with water. Your teacher
will instruct you on how to dispose of chemicals for each lab.
b. Toxic or poisonous chemicals must be poured into the toxic waste container.
c. Left over chemicals are never poured back into the stock container where they came from.
15. You should not wear contact lens during laboratory experiments because volatile chemicals can get trapped under them.
16. You should know the basic WHIMIS symbols.
A. Fire ExtinguishersB. Fire BlanketsC. Eyewash Fountain or Eyewash StationD. Emergency ShowerE. Acid-Base Neutralizing Solution
Pull the safety pin outAim at the BASE of the flamesSqueeze the handleSweep back and forth
Two possible situations where a fire blanket should be used are:
1. When a student’s clothing or hair catches fire
2. To smother burning material on the floor or bench
A student who is on fire must __S___________,
____D_________, and ____R_________.
An eyewash MUST be used any time a chemical solution gets into your eyes.
When using an eyewash station, you MUST keep your eyes _______ in the stream of water. You should keep washing your eyes for at least ____ minutes.
What should you do if you are wearing contact lenses?
_______________________________________________________________________________________________________________________________________
When should an emergency shower be used? __________________________________________________
________________________________________
Two types:
*overhead shower with a pull ring
*Hand-held shower with on-off handle
Use this solution whenever an acidic or basic solution has come into contact with your skin.
DO NOT USE IT IN your eyes! First wash the affected area with large amounts
of ____________________ then pour some of the ________________________ on the affected area and gently wash the skin with _____________________.
*Safety goggles MUST be used whenever Chemicals or glass-work is being performed.
*Goggles must be put on PRIOR to _____________________________________________.
*Goggles must not be removed until AFTER _____________________________________________.
*Fume hoods must be used whenever _______________________________________________________________________________________________________________________________________.
1. Fire bell rings
2. Turn off Bunsen burners and electrical equipment.
3. Students sitting closest to windows should close them.
4. Teacher leads students out of room to nearest exit (in an orderly fashion) quickly.
5. STAY TOGETHER. Do not go back into building
6. Stay quiet and calm until Admin gives instructions.
Hazard
*Some lab hazards
A.DISPOSAL OF UNUSED CHEMICALS NEVER put unused chemicals back into original
containers. Instead,
________________________________________________________________________________________.
Putting chemicals back into original containers poses two problems:
__________________________________________________________________________________________
B. DISPOSAL OF USED CHEMICALS
*You will be given instructions as to how to dispose of the chemicals used in an experiment.
A material that will quickly cause injury, illness, or death.
A material that can cause serious illness over a long period of time, or less serious in a short time
*You can find these symbols and their meanings right here:
*http://www.ehs.utoronto.ca/resources/whmis/whmis9.htm
Clean up spills
Wear safety goggles Don’t heat closed containers
Point them in a safe direction
electrical cords kept away from the edge of the table
