ГРАММАТИКА: Инфишпив и инфинитивный оборот в функции обстоятельства. Придаточные обстоятельственные предложения.
Section I
Ex. 1. Practise your reading.
It is a matter of common experience that the capacity of a solvent to dissolve in a given solute is often limited.
Ex. 2. State what parts of specch the following words belong to:
mix, mixture, mixing, mixer, mixed, mixablc, miscible, miscibility
Ex. 3. Define the meanings of the word case in the following sentences:
1. Wc shall first limit ourselves to the case of ideal solutions. 2. In case a solute and its solution reach equilibrium, a saturated solution may result. 3. A homogeneous material has the same properties throughout, it is far from the case with heterogeneous materials. 4. According to their properties the halogens should be very rcactivc, and this is really the case. 5. Reacting with oxygen, an clement forms an oxide in which case the process is known as oxidation. 6. Phosphorus is very active chemically, but this is not the case with nitrogen. 7. During oxidation, heat and light arc often liberated, in this case the proccss is callcd combustion. 8. It was supposed that oxidation of copper could be prevented under low temperatures, and such was the case. 9. One cannot cxpcct that gas molcculcs would always behave in the same way as is the case with liquid molcculcs. 10. If there arc several ways of doing something, one should know all of them so that he could choosc anyone, as the case may be.
Ex. 4. Analyse the following sentence:
There arc many pairs of substanccs wrhich can be mixed in any proportions to form homogeneous solutions.