1
00:00:00,410 --> 00:00:14,529
in this video we're gonna learn about four methods for separating mixtures which are

2
00:00:14,529 --> 00:00:25,780
evaporation filtration decantation and distillation evaporation is a method used

3
00:00:25,780 --> 00:00:44,070
to separate homogeneous mixtures of a liquid and solid for example water and salt the mixture is

4
00:00:44,070 --> 00:00:52,950
left in a dry place so that the liquid component evaporates and only the solid remains this system

5
00:00:52,950 --> 00:01:04,810
is used industrially to extract salt from sea water filtration is a method to separate heterogeneous

6
00:01:04,810 --> 00:01:13,370
mixers of a liquid and solid for example the oranges and the pulp the mixer is poured over

7
00:01:13,370 --> 00:01:30,200
strainer or on porous paper called a filter the solid component will remain in the filter

8
00:01:30,760 --> 00:01:41,989
whereas the liquid will pass through it decantation is a method to separate heterogeneous

9
00:01:41,989 --> 00:01:51,269
mixers of two liquids, like water and oil. The mixer is left to stand so that the denser

10
00:01:51,269 --> 00:01:58,329
liquid is at the bottom and the less dense at the top. Once this point is reached, one

11
00:01:58,329 --> 00:02:17,840
of the two is removed from the container. Decantation can also be used to separate heterogeneous

12
00:02:17,840 --> 00:02:38,400
mixtures of a liquid and a solid, like water and sand.

13
00:02:38,400 --> 00:02:41,360
And finally, distillation.

14
00:02:41,360 --> 00:02:49,979
This is a method to separate homogeneous mixtures of two liquids, like water and alcohol.

15
00:02:49,979 --> 00:02:56,379
When heating the mixture, the liquid with the lowest boiling point will evaporate first.

16
00:02:56,379 --> 00:03:02,879
In the case of wine, which contains water and alcohol, the alcohol will evaporate first

17
00:03:02,879 --> 00:03:10,659
because it boils at 78 degrees, whereas water boils at 100 degrees.

18
00:03:10,659 --> 00:03:20,000
This big tube here is filled with cold water.

19
00:03:20,000 --> 00:03:25,520
When the gaseous alcohol goes through the spiral tube which is inside, it will be cooled

20
00:03:25,520 --> 00:03:29,039
down and returned to its liquid state.