This worksheet must be completed and brought to the Chemistry Prac Day.
To complete go to: www.chem.unsw.edu.au/bridging-prelab/
SAFETY AND ETHICS IN THE CHEMICAL
LABORATORY
Your name: ____________________________
Lab day/time: __________________ Workspace: _________
Safety
Aim
To gain an understanding of safe practices in a chemical laboratory.
Method
The following questions should be answered as you view the 'First Year Chemistry Lab Safety Tutorial' on the web.
Answer the questions below as you read through the material on the web pages. WRITE YOUR ANSWERS IN PEN.
Pencil is not accepted in any laboratory report.
1.
Look at the photograph of a poor laboratory work space. Identify as many features as possible which represent poor
or dangerous laboratory technique. (You do not need to fill in ALL the spaces below.)
1
2
3
4
5
6
7
8
9
10
2.
State three ways in which you could be exposed to harmful substances in a chemical laboratory and indicate for
each, one way in which the risk can be reduced.
Type of Exposure
3.
Risk Reduced By ...
The WorkSafe Australia technical report "List of Designated Hazardous Substances" contains a list of substances
which have been classified as hazardous, together with the risk and safety phrases which should appear on the label
of the chemical. Write down the appropriate risk phrases and safety phrases which correspond to the codes shown
below. Click on the words ‘Risk’ and ‘Safety’ on the label to display the phrase codes.
Risk Phrase Code
Associated Risk Phrase
36/37/38
45
Safety Phrase Code
Associated Safety Phrase
17
24
4.
It is not only in the chemical laboratory that dangerous substances will be encountered. Many are found at home.
Complete the following table by giving an example of a substance which may be found in the home which belongs
to each of the classes given below.
Class
Example
3
4
5
7
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UNSW SCHOOL OF CHEMISTRY
5.
The dangerous goods (ADG) diamond symbols most commonly encountered in First Year chemistry are those
associated with substances which are flammable, oxidising agents, toxic or corrosive. Describe each of these
diamonds, including the label colour and graphics symbols present.
Type of Compound
Description of Dangerous Goods Diamond
Flammable liquid
Oxidising agent
Toxic
Corrosive
6.
Describe the GHS pictogram for a substance which is toxic in natural waterways.
7.
What must you do before you use any laboratory glassware?
8.
What must you do before you use a Bunsen burner?
9.
Where do you dispose of used gloves?
UNSW SCHOOL OF CHEMISTRY
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