- And now here's my friend astronomer Amy Mainzer!

- Thanks, Jet.

Water's pretty amazing stuff, if you think about it.

Water's a great way to think about what scientists call states of matter.

Liquid, solid, and gas.

Water can exist in all three of these states, and you can turn it from one state to another just by changing its temperature.

Let's take some liquid water and turn it into solid ice by putting it in the freezer.

♪ ♪ Water isn't the only thing that changes when you make it really cold or really hot.

Let's see what I've got in the kitchen and have some fun.

I've got chocolate syrup, ketchup, salad dressing, dish soap, sports drink, cooking oil, and salt water.

♪ ♪ Okay, let's see what we've got.

Oh, the water ice is frozen solid, but the chocolate sauce, the ketchup, and the salad dressing, they're kinda goopy.

The dish soap is pretty solid, but, ooh, the sports drink-- definitely frozen solid.

And, ah, the oil, very liquid.

And the salt water here too is pretty slushy.

That's because all of these things freeze at different temperatures.

Ketchup-pops, anyone?

I think I like regular old ice cubes better.

So the next time you drink a glass of ice water, just remember, that's two states of matter in one glass.

- Thanks, Amy.

You can make your own science discoveries with "Ready Jet Go!"

games on the PBS KIDS Games app.

Start playing today.