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Welcome to the wonderful world of Chemistry

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Title: Welcome to the wonderful world of Chemistry


1
Welcome to the wonderful world of Chemistry

Miss Qumsieh
2
  • Todays agenda
  • Welcome and introduction/expectations.
  • Chem 11 course outline.
  • Chem 11 textbooks.
  • Lab safety procedures/safety contract.
  • E-mail permission slips

3
(No Transcript)
4
Never attempt Unauthorized Experiments in the
Lab!
Follow the Approved Procedure for the Experiment!
Mark Iannone
5
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.
  • Never eat or drink in the laboratory.
  • Report any accident, spill, or breakage to you
    teacher immediately.
  • Always clean your work area and equipment at the
    end of the lab period.
  • Dress properly for the laboratory. a. Roll long
    sleeves above the wrist b. Dont wear
    loose-fitting sleeves or bulky outerwear. c. Tie
    back long hair.
  • d. No sandals or open-toed shoes

7
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.
8
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.
9
  • 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.

10
  • 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.

11
  • 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.
  • 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.

12
I.1 EMERGENCY EQUIPMENT
  • Fire Extinguishers
  • Fire Blankets
  • Eyewash Fountain or Eyewash Station
  • Emergency Shower
  • Acid-Base Neutralizing Solution
  •  

13
Pull the safety pin out Aim at the BASE of the
flames Squeeze the handle Sweep back and forth
14
B. FIRE BLANKET
  • Two possible situations where a fire
  • blanket should be used are
  • 1. When a students 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_________.

15
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?
  • __________________________________________________
    __________________________________________________
    ___________________________________

16
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

17
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 _____________________.

18
I.2 PROTECTIVE EQUIPMENT
19
A. SAFETY GOGGLES
  • 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
    _____________________________________________.

20
B. FUME HOODS
  • Fume hoods must be used whenever
    __________________________________________________
    __________________________________________________
    ___________________________________.

21
1.3 In case of fire
22
Fire Alarm Rings? Procedures
  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.

23
  • Hazard
  • Some lab hazards

24
I.4 SOME LAB HAZARDS
25
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
  • _____________________________________________
  • _____________________________________________

26
I.5 DISPOSAL OF CHEMICALS
  • B. DISPOSAL OF USED CHEMICALS
  • You will be given instructions as to how to
    dispose of the chemicals used in an experiment.

27
WHIMIS SYMBOLS
28
Compressed Gas
29
Flammable Combustible Material
30
Oxidizing Material
31
Immediate Serious Toxic Effects
A material that will quickly cause injury,
illness, or death.
32
Other Toxic Effects
A material that can cause serious illness over a
long period of time, or less serious in a short
time
33
Biohazard Infectious Material
34
Corrosive Material
35
Dangerously Reactive Material
36
  • You can find these symbols and their meanings
    right here
  • http//www.ehs.utoronto.ca/resources/whmis/whmis9.
    htm

37
Dont heat closed containers
Wear safety goggles
Point them in a safe direction
Clean up spills
electrical cords kept away from the edge of the
table
38
Quiz4 multiple choice questions2 short
answers4 identifying symbolsread your
textbook Unit1, questions, and learn the symbols.
You will do awesome ?
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