This is a Clilstore unit. You can .

KINETIC THEORY AND CHANGES OF STATE

In the first place, students will watch in the follow link a short animation about this concept. It is very good because has audio and students can practice different skills while learn the topic. In this case reading and listening.

In order to reinforce the concepts learned students will do this interactive glossary quiz with 34 terms: http://preparatorychemistry.com/Glossary_2_CF_flash.htm

Now, students are ready for watching this video about the changes of state:

TRANSCRIPT:

0:03
when you saw it gets warm enough
0:05
it now to explain what's happening
0:08
imagine you can see how the particles in a solid arranged
0:12
there in affixed framework vibrating
0:16
but not straying far from their main position when energy is supplied
0:21
the particles vibrate more violently and become free to move
0:25
the solid changes into a liquid
0:36
melting involves a transparent energy this can be illustrated by putting an
0:42
ice cube
0:42
in a sealed container leaving another one empty
0:49
yeah on the left is it twenty five point five degrees Celsius
0:53
as the ice melts it takes energy from the surroundings
1:01
the temperature at the end in the right on container this fallen by about 3
1:05
degrees
1:06
energy is also needed to change a liquid to a gas
1:11
so what's happening to the particles this time
1:16
in a liquid the particles a free to move around
1:19
eating causes them to move around more quickly
1:23
those which have enough energy escape from the liquid
1:27
forming a guess this is evaporation
1:31
ether
1:36
evaporates at room temperature is taking energy from the surroundings
1:40
and disappears in less than five minutes is possible to see how different liquids
1:49
take heat from their surroundings
1:51
using thermometers wrapped in stream they all start of it mean temperature
2:02
the string absolves the liquids
2:08
number one on the left is a control number two
2:12
is dipped into water 3 into ethanol
2:15
the full into each other as soon as the string leads the liquid
2:21
its operation get underway
2:31
the temperature at the moment is three and four quickly begins to drop
2:34
as the liquids evaporate they're taking energy from the string
2:39
the N and even the ball but the thermometer
2:42
same
2:47
which taken most energy from its surroundings liquid
2:51
to you 3 of all
2:59
gases can also be changed into liquids for this to happen they need to be
3:04
cooled
3:04
liquid nitrogen is extremely cold
3:09
im us a balloon for that in it
3:12
and see what happens the balloon shrinks and becomes brittle
3:19
inside you can see liquid
3:23
its liquid and this time the balloon is filled with carbon dioxide gas
3:36
invested in liquid nitrogen
3:41
and cools rapidly was inside the balloon
3:47
this time
3:52
if the gas gets cold enough it changes into a solid
3:55
this
4:01
is solid carbon dioxide see how it changes back to a gas that mean
4:07
temperature

Finally, students, in groups, will play with this fantastic simulation and each group will prepare a short exposition of an assigned kind of change of state using the application.

All in all, students will learn the specific content and will train their language skills.

Short url:   http://multidict.net/cs/4242