00:01
So we're just going to compare some of the properties of states of matter.
00:08
So we're going to talk about we have solids, liquids, gas, and then plasma, which some people might say sort of a subset of gas.
00:29
And just as a side note, you should know that there are other states of matter, but these are the ones we really interact with the most.
00:36
So in a simple way, the sort of the simple observable facts are that solids have a fixed shape and a fixed volume.
00:58
So they don't, you can't, you know, compression, you can't just change their shape or change their volume.
01:07
They're basically fixed.
01:09
So liquids have an unfixed shape.
01:22
If you pour a liquid into a different container, you can change its shape.
01:27
Its shape is not fixed.
01:28
However, its volume is fixed.
01:32
It's got a fixed volume.
01:33
You can't really compress liquids.
01:37
Liquids are basically incompressible.
01:40
At extreme pressures, you can vary.
01:44
Very, very slightly compressed them, but not much at all.
01:47
If you have a fixed shape, you could basically, you know, if you had like a container that was the exact shape of your shoe, you could theoretically stand on a container of liquid shaped exactly like your shoe because it would not compress, assuming that you didn't, you know, it didn't, you know, come up, you did that you didn't slip into that container, assuming that, you know, that you couldn't actually, move it, move it around.
02:17
So then a gas, a gas has an unfixed shape and an unfixed volume.
02:31
It is, you can change the shape of a gas by putting it in a different container, and you can also compress it.
02:43
So plasmas have these same properties as well.
02:48
Plasma is basically a gas that is charged and we'll get into that a more a little bit more in a minute so also unfixed shape unfixed volume so then we want to sort of talk about the molecular qualities so in solids we have these really tight bonds some one of the other key characteristics people might say is that it's in a crystal and a crystal and lattice.
03:26
So the atoms or molecules, they're all in sort of a regular array like this.
03:33
And they sort of vibrate back and forth as if they were connected by springs.
03:39
There's not literally springs there, but they vibrate sort of like there were these springs there.
03:47
And that's a solid...