# Английский язык. Кислякова Н.В - 6 стр.

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• ## Иностранный язык

6
1. Water is an excellent
2. Most of the substances are in water.
3. may be defined as a homogeneous mixture of one or more substances.
4. is one of the chemical properties of a substance.
5. If we some of the hydrochloric acid gas in water, the solution has a sour
taste.
B. purification to purify
purity
impurity pure
1. All plants and factories must have the system of of industrial wastes.
2. water can be prepared by distillation, filtration or boiling.
3. water prepared by distillation is often used as a solvent.
4. Natural waters have different
5. Providing of water pools in our country is one of the most important
ecological problems.
V. Match the words in the left column with the suitable words in the right
column and explain in English the meaning of these word combinations.
Model: Alcohol is a chemical substance often used as a solvent.
Dropper Property
Purified Device
Density Parametre
Alcohol Mixture
Weighing Characteristics
Solution Substance
Temperature Process
                                        6
1.Water is an excellent …
2.Most of the substances are … in water.
3.… may be defined as a homogeneous mixture of one or more substances.
4.… is one of the chemical properties of a substance.
5.If we … some of the hydrochloric acid gas in water, the solution has a sour
taste.
B. purification        to purify

purity

impurity             pure

1.All plants and factories must have the system of … of industrial wastes.
2.… water can be prepared by distillation, filtration or boiling.
3.… water prepared by distillation is often used as a solvent.
4.Natural waters have different …
5.Providing … of water pools in our country is one of the most important
ecological problems.
V. Match the words in the left column with the suitable words in the right
column and explain in English the meaning of these word combinations.
Model: Alcohol is a chemical substance often used as a solvent.
Dropper                   Property
Purified                  Device
Density                   Parametre
Alcohol                   Mixture
Weighing                  Characteristics
Solution                  Substance
Temperature               Process