Chemistry: 3.2 Phase Changes in Matter

You may not know it, but matter can go through a bunch of different phases. And we're not even talking about that romantic vampire phase it went through last year. We're pretending that one didn't happen.

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ScienceChemistry

Transcript

00:24

did a little research and learned that the process his little cloud was undergoing was...

00:28

called condensation. Basically, the water vapor molecules had started...

00:33

to slow down and lose energy, and with everything slowed down, hydrogen...

00:37

bonds had begun to form, resulting in liquid water.

00:41

A little H2 to go with his O. Yeah, it got even worse once...

00:46

winter arrived. Then all the rain continually pouring down on Grady's face...

00:50

began to freeze. Suddenly he was covered in ice, which is of course...

00:54

water's solid form. Because heat was removed from...

00:58

the equation, the kinetic energy of the water particles had plummeted,

01:02

and now the particles were held in place by all those newly formed hydrogen...

01:06

bonds. Well Grady was pretty sure this was just gonna be his life.

01:10

And he was gonna have to find a way to live with it. Until one day, he wandered...

01:14

near a heat lamp. With heat being reintroduced, kinetic...

01:18

energy was increased, and it got those water particles moving...

01:22

again. The ice was melted, and the particles were now bouncing around...

01:26

quickly enough that they returned to their liquid state, and Grady was back to...

01:30

having a raincloud. But now that he'd made some progress, Grady was intent...

01:34

on learning more. Oh, that Grady. So he kept reading and discovered that...

01:38

if he were to warm himself up even more, he might initiate...

01:42

the process of vaporization, which would dry up...

01:46

all the rain. So, you know, the itsy bitsy spider could come out again...

01:49

or something like that. Grady cranked up his thermostat, and locked...

01:53

himself in his room. Before long, the water molecules started to go nuts.

01:57

Hydrogen bonds were broken, and the rains started to vaporize.

02:01

The cloud over Grady's head swelled a bit, but at least he...

02:05

was now dry. He could learn to live with the cloud, even if it would...

02:08

be awkward on dates.