11 Fill in the gaps with the words or word combinations given below.

flammable, radiation, No Open Flames, combustible, nonpotable,

chemical containers, corrosive, toxic, biohazard, electricity, functional, explosive

1) ___________ materials are usually strong acids or bases. They represent a hazard to your skin, and often to mucous membranes through inhalation of vapors. Pay attention to the proper storage container for these materials. In addition, these materials are reactive.

2) __________ materials are those which can catch fire readily.

3) This is the symbol for ___________ or poisonous materials.

4) This symbol indicates a ___________ hazard.

5) This is the symbol for a ___________, or a material which represents a threat to cellular materials or living organisms.

6) If you see a ___________ sign, this usually implies there is a flammable or combustible material nearby.

7) This sign warns of live ____________.

8) This sign warns of ____________ materials.

9) The Fire Extinguisher sign should mark the position of a ____________ fire extinguisher.

10) The _____________ water sign lets you know the water is not approved for drinking.

11) This symbol accompanies ____________ materials.

12) The hazard label is found on _____________. It indicates health hazard, flammability, and other cautions associated with the chemical.

12 In activity 11, find a suitable description for each of the signs below and give your ideas about the names of these signs.

A ___________

B ____________

C __________

D _________

E __________

13 A) Match the words from the box with the words below to make right word combinations. Use each word only once.

blanket, assistant, coat, sign, extinguisher, rules, supervisor, fumes, equipment, materials

1 lab a) _________ b) _________ c) _________	2 fire d) _________ e) _________
3 safety f) __________ g) __________ h) __________	4 toxic i) _________ j) _________

b) Make your own sentences with these word combinations.

14 Find the synonyms in column B for the words in column A.

A	B
1 combustible 2 poisonous 3 danger 4 sign 5 drinking	a) symbol/label b) oxidizing c) potable d) toxic e) hazard

15 Using the suffixes below form the words in the table from the given ones. Use each suffix only ones.

-ty, -er, -ous, -ity, -al, -(t)ion, -able, -ive

Noun	Adjective	Verb/adjective	Noun
1 explosion 2 flame 3 chemistry 4 hazard		1 radiate 2 electrical 3 extinguish 4 save

SPEAKING

16 Compare the pictures (A and B, C and D). What is common among them and what is different while working in a chemistry lab?

A B

C D

17 Tell your partner about a lab accident that has recently happened. Mention the following:

• what exactly has happened

• who was injured; if the injury was serious or not

• what was done to prevent an accident

• what was done to avoid another accident

18 a) In pairs, prepare a description the situation of a lab accident, or you may use the situation you have discussed in activity 17.

b) Now you are going to make an accident investigation of another pair. Find out all necessary facts for making a brief report of an accident (minimum information for your report you can find in activity 8 ‘Reading’).

c) After investigation you must prepare a brief report of an accident. Use activity 9 as a model.

19 In pairs, discuss the following situations. In the lab, what you should do if you:

• feel dizzy/sick

• catch on fire

• mix wrong chemicals

• break a mercury thermometer/spill mercury

20 Work in groups. In each group, the two of you will be performers and the rest are the audience.

Performers Imagine you work in a lab or workshop. So you know the safety rules quite well. That’s why you were asked to give a short lecture for younger employees. In pair, prepare a mini lecture on the base of the leaflets (A and B) below. Use Imperative and modal verbs must, should, etc. during your talking.

Audience Imagine you are young employees. You are to start working in a lab or workshop. But you don’t know the safety rules very well. So, as an audience you should listen to the performers carefully and ask questions on the topic.

L eaflet A

L eaflet B

PROJECT WORK

“Safety at my workplace”