Transcript Document

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 wrist
b. 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.
B.
C.
D.
E.
Fire Extinguishers
Fire Blankets
Eyewash Fountain or Eyewash Station
Emergency Shower
Acid-Base Neutralizing Solution
*I.1 EMERGENCY
EQUIPMENT
Pull the safety pin out
Aim at the BASE of the flames
Squeeze the handle
Sweep back and forth
*B.
FIRE BLANKET
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_________.
*C.
EYEWASH FOUNTAIN
OR EYEWASH STATION
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?
_______________________________________________
________________________________________________
________________________________________
*D.
EMERGENCY
SHOWER
When should an emergency shower be used?
_______________________________________________
___________________________________________
Two types:
*overhead shower with a pull ring
*Hand-held shower with on-off handle
*E.
ACID and BASE
NEUTRALIZING
SOLUTIONS
 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 _____________________.
*I.2 PROTECTIVE
EQUIPMENT
* 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
_____________________________________________.
*A.
SAFETY GOGGLES
*B.
FUME HOODS
* Fume hoods must be used whenever
________________________________________________
________________________________________________
_______________________________________.
*1.3 In case of fire
1.
2.
Fire bell rings
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.
6.
STAY TOGETHER. Do not go back into building
Turn off Bunsen burners and electrical
equipment.
Stay quiet and calm until Admin gives
instructions.
*
Hazard
*Some lab hazards
*I.4 SOME LAB
HAZARDS
*I.5 DISPOSAL OF
CHEMICALS
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.
*I.5 DISPOSAL OF
CHEMICALS
*
*Compressed
*Flammable
*Oxidizing
* Immediate
Toxic
A material that will quickly
cause injury, illness, or death.
*
Toxic
A material that can cause serious illness over a
long period of time, or less serious in a short time
*
Infectious
*Corrosive
*
Reactive
* You can find these symbols and their meanings right
here:
* http://www.ehs.utoronto.ca/resources/whmis/whmis
9.htm
Wear safety goggles
Don’t heat closed containers
Point them in a safe direction
Clean up spills
electrical cords kept away from the
edge of the table
*