Safety

Question 1

What is the cardinal rule of safety in the laboratory?

Answer 1

Work cleanly and deliberately: don’t rush and above all think before you act

Question 2

Why should contacts not be worn in the lab? (3)

Answer 2

• The lens might impede rapid flushing of the surface of the eye in an emergency
• Soft contacts are porous. Aerosols of corrosive or toxic materials may be absorbed into the lens
• Chemicals or dust might get trapped behind contact lenses

Question 3

What should you do if you get chemicals in your eye?

Answer 3

Flush eyes with cold water for 15 min. Lightly cover the eye with a sterile eye pad and go to hospital

Question 4

How do you treat alkali burns?

Answer 4

Flush the burn with water for about 15 min and apply a dressing

Question 5

How do you treat an acid burn?

Answer 5

Treat the same as another burn, but bathe the area gently with a solution of sodium bicarbonate before applying the dressing

Question 6

How do you treat an electrical burn?

Answer 6

Shut off the current or free the person using something non-conducting. Check breathing and treat burns as for any other burn.

Question 7

What are four things not to do to burns?

Answer 7

• Do not remove stuck clothing
• Do not burst any blisters
• Do not apply and cream or ointment
• Do not apply cotton wool or similar material or use an adhesive dressing

Question 8

What does WHMIS stand for?

Answer 8

Workplace Hazardous Materials Information System

Question 9

What does WHMIS demand by attached with all chemicals sold?

Answer 9

A Material Safety Data Sheet (MSDS)

Question 10

What does the Material Safety Data Sheet contain? (7)

Answer 10

• Toxicity
• Health hazards
• Physical data
• fire and explosion hazards
• Reactivity data
• Spill and leakage procedures
• Precautions for handling and storage

Question 11

WHMIS hazardous symbols are usually ____ on a ____ background

Answer 11

WHMIS hazardous symbols are usually black on an orange background

Question 12

What are the 8 WHMIS precaution symbols?

Answer 12

• Pressurized vessel (WHMIS class A)
• Flammable/combustible (WHMIS class B)
• Oxidizing (WHMIS class C)
• Toxic/poisonous (WHMIS class D, division 1)
• Harmful (WHMIS class D, division 2)
• Biohazards (WHMIS class D, division 3)
• Corrosive (WHMIS class E)
• Dangerously reactive/explosive (WHMIS class F)

NOTE: Radiation not part of WHMIS

Question 13

What are three types of biohazards (WHMIS class D, division 3)?

Answer 13

• Micro-organisms
• Animals
• Body fluids