Question

what do they mean ? write briefly
1) atmosphere. 2) stratosphere
3) exosphere 4) chlorination
5) distilled water. 6) evaporation
7) sedimetation. 8) decantation
9) filtration. 10) solvent​

Answer 1

Explanation:

1.

the mixture of gases that surrounds the earth or any other star, planet, etc

2.the layer of the earth's atmosphere between about 10 and 50 kilometres above the surface of the earth.

3.the outermost region of a planet's atmosphere

4.

to treat or combine with chlorine or a chl

orine compound

5)

Distilled water is water that has been boiled into vapor and condensed back into liquid in a separate container.

6)

the process of turning from liquid into vapour.

7)

t

the process of leaving sediment

8)

Decantation is a process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension

9

the process of passing a liquid or gas through a filter

10

solvent, substance, ordinarily a liquid, in which other materials dissolve to form a solution. Polar solvents (e.g., water)

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Answer 2

1. Atmosphere is a blanket of air surrounding the Earth surface. Atmosphere contain oxygen which is essential for animals to breath and get energy from food.It also contains carbon dioxide which is used by the plant to make their own food.
2. The stratosphere is a layer of earth atmosphere. It is second layer of the atmosphere as you go upward. The tratosphere, the lowest layer is right below the stratosphere.
3. The exosphere is the uppermost region of the earth atmosphere and has no clear upper boundary since it gradually fades into outer space.The layer directly below the exosphere is the thermosphere the boundary between the two is called the thermo pause.
4. The process of treating water with chlorine is known as chlorination.Water chlorination is defined to be a process which chlorine is added or chlorine lb such as sodium hydrochloride is added to water.
5. Distilled water is water that has been boiled into vapour and condense back into liquid in a separate container.Impurities in the original water that do not boil below or near the boiling point of water remain in the original container. this process is known as distilled water.
6. Evaporation is the process of a substance in a liquid state changing to a gaseous state due to and increases in temperature and pressure. evaporation is a fundamental part of the water cycle and is constantly occurring through the nature.
7. Sedimentation it is defined as the separation process in which solid and separated from the liquid. all the solid settle down at the bottom beaker and on top of a clear layer of liquid is obtained.
8. The pouring out of a liquid from a vessel without disturbing the sediments is called decantation. There are some mixtures which contain in soluble solid particle suspended in a liquid. the solid particles which are insoluble in a liquid can be separated by decantation