Atoms and atomic theory

Chemistry is often defined as the study of the structure and behaviour of 
matter.

English in chemistry 1 – 2017 
TS. Nguyễn Tuyết Phương – TS. Trần Thu Phương 
 
 
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Chemists do a lot more than just answer questions. Industrial chemists are producing new 
materials to be used to build lighter and stronger airplanes, more environmentally friendly 
disposable cups, and more efficient anti-pollution devices for your car. Pharmaceutical 
chemists are developing new drugs to fight cancer, control allergies, and even grow hair on 
bald heads. 
In the past, the chemists’ creations have received mixed reviews. The chlorofluorocarbons 
(CFCs) used as propellants in aerosol cans are now known to threaten the Earth’s protective 
ozone layer. The durable plastics that chemists created have proved too durable, so when 
they are discarded, they remain in the environment for a long, long time. One of the 
messages you will find in this book is that despite the occasional mistakes and failures, most 
chemists have a strong social conscience. Not only are they actively developing new 
chemicals to make our lives easier, safer, and more productive, but they are also working to 
clean up our environment and minimize the release of chemicals that might be harmful to 
our surroundings. 
Q1. - Make groups of students. 
- Each group prepares 5 questions. 
- Each group takes turn to ask and answer questions from the other group.