М. М. Кутепова The World of Chemistry Мир

Ask all possible questions to the text and let your fellow students answer them.

Write out of the text the sentences expressing the main idea(s) of each paragraph. Retell the text briefly using your plan and the sentences you’ve written out.


39

Declarative	Negative	Interrogative	Imperative
1.

2. 
   Don’t wear long scarves that might catch fire.
   
3. 
   What are the building blocks of matter?
   
4. 
   The next eleven weeks I’ll be your lab instructor.
   
5. 
   Isaac Newton lived in a period when toxic chemicals were not quite understood.
   
6. 
   The purpose of today’s lecture is to provide an introduction to chemistry.
   
7. 
   What are the three states of matter?
   
8. 
   The composition of a pure substance never changes.
   
9. 
   Wear protective goggles all the time in the laboratory.
   

b) Listen to the following dialogue, answer the questions below choosing the correct answer out of the given ones and say what rules were violated. The list of unknown words and expressions comes handy: