1. Find equivalents:

2. Complete the sentences:

1. Particle physics studies

2. Atoms are made up

3. Scientists believe that the universe was formed

4. Matter is anything that takes up

5. Grouping together particles

6. We classify all matter into

7. The state of some substance depends

8. Specific temperatures of changing the state of a matter are known as

9. Atoms are so small that even a pinhead contains     

10. Particles contained inside atoms are called

11. An element is

12. It is impossible to break atoms down by

13. Some elements known exist naturally as well as the others

14. Metals and non-metals are

15. Compound is a substance in which

16. The type and the number of bonds formed in a compound depend

17. A molecule is formed by

18. All gases, most liquids and many non-metallic solids consist

3. Answer the questions.

1. What does everything consist of?

2. What enables particle physics for scientists?

3. In what kinds can a matter exist?

4. What denotes a mass for all matter?

5. Why do exist so many kinds of matter?

6. When can the change of state of a substance occur?

7. Who first guessed that matter might be composed of small particles?

8. How many natural and artificial elements are there?

9. How can be a compound formed?

10. Are the properties of a compound and those of the elements it contains identical?

4. Translate and do the summery of the text «Subatomic particles» (Additional Reading).

5. Translate texts devoted to Nanotechnology (Additional Reading) and make a report on the topic.