III. Answer the questions:

1. What is a solution?

2. What substances are present in solutions?

3. What is diffusion?

4. What are the components of solutions?

5. What are the inorganic solvents?

6. What are the organic solvents?

7. Can the solutions be heterogeneous?

IV. Match adjectives and nouns from the text

homogeneous	proportion
variable	mixture
major	composition
common	solvents
inorganic	purpose
similar	alloys
metal	time
sufficient	mixture

V. Read the extract from the text below and find the synonyms to the marked words.

Soluble substances are those that easily dissolve in a solvent, such as water, and include sugar, salt, alcohol and some dishwashing detergents. In chemistry, solubility of a substance is a quantitative term that refers to the amount of substance that can dissolve in a given volume of a solvent. A substance is considered soluble if more than 0.1 gram of that substance can dissolve in 100 ml of solvent. 

Tips:; involve; notion; dimension; without effort; quantity

VI. Retell the text

VII. Translate the sentences from English into your native language, paying attention to the meaning of a modal verb can (mental, physical, circumstantial ability, permission, request and prohibition).

1. You can make a slight solution of salt by adding half a spoon of salt into a glass of warm water.

2. Can you count the percentage of substances that should be put into water to make an appropriate solution?

3. Can you differentiate a solvent from a solute?

4. Can we put these ingredients right now or we have to wait?

5. You can put this element into water, nothing bad can happen.

6. We can’t mix raw and milk powder, it is harmful for babies’ health.

7. Soluble substances can be easily dissolved in water.

8. Water can be considered one of the best of inorganic solvents.

9. Can you say that alcohol is the best organic solvent?

10. Мolecules of sugar can be found randomly distributed throughout the water.

VIII. Divide into 2 teams and give you reasoning about the statement: “Pharmacist is 80% doctor and 20% businessman”. The 1^st team proves this point of view; the 2^nd one tries to prove that managing part of the pharmaceutical activity is more important. Use the following words and word combinations:

Must be understood that, you shouldn’t think that; we ought to pay attention to; pharmaceutical market; prices/costs are expensive; we mustn’t forget about problems…; can you imagine…?; you needn’t have explained that.

V.

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Topic: Preparation of tablets

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I. Practice the pronunciation of the following words and word combinations. Translate them:

1. medication n. [mɛdɪˈkeɪʃ(ə)n]

2. dry adj. [drʌɪ]

3.state n. [steɪt]

4. purely adj. [ˈpjʊəli]

5. to subject to smth. v. [ˈsʌbdʒɛkt]

6. a die n. [dʌɪ]

7. a punch n. [pʌn(t)ʃ]

8. disintegration n. [dɪsˌɪntɪˈɡreɪʃ(ə)n]

9. sodium n. [ˈsəʊdɪəm]

10. preparation n. [ˌprɛpəˈreɪʃ(ə)n]

11. moisture adj. [ˈmɔɪstʃə]

12. to dissolve v. [dɪˈzɒlv]

13.lubricant n. [ˈluːbrɪk(ə)nt]

14. chemist n. [ˈkɛmɪst]

15. powder n. [ˈpaʊdə]