you'll have to put energy into the h2o. and if you wanna turn liquid to gas, say, water to steam, you gotta keep putting the fire in, yeah? so you get energy in going this way. but how about the converse? that's the part we're talking about now. how about you go from a gas to a liquid? does the gas give up energy or take it in? give up. it gives it up. yes. and how about going from the liquid to a solid, does it give it up or take it in? give up. it gives it up. and so you go like that. and this is energy out. it used to be, before the time of electricity, a lot of farmers would get wiped out in the northern parts of america when their food would freeze. they'd have these canning cellars, they'd be down below 6 feet level. but sometimes, it would get so cold that the darn food would freeze, it would be in jars and they would be wiped out. you know why they be wiped out? because it turns out, when those jars of food freeze, it turns to ice and the ice does what? begin with a ex. expand. expands. and it makes glass-- begin wi

and the reason for the six sidedness of the snowflakes has to do with the way the h2o molecules pack together in their least energy configuration. and as they're all packed together and they form hexagons you see that in the textbook? and this is on page 263. and they form these hexagon structures with an open space in the middle. so you know what that means? a snowflake takes up more room in the snowflake form than if you melt it and turn it back to wate you turn it back to water, the molecules will caved in and occupy that empty spot. it's like a brick building. a brick building occupies more space when it's in its constructed configuration than if you shake it so ha, you shake all the bricks and they cave in. the pile of bricks is less voluminous than the brick building was before it caved. same thing with ice, gang. so water forms an open structure in its crystalline form, and that's kind of nice. it makes ice less dense than water, and the ice will float. so you can go ice skating, gang. some people are kinda good at facts and figures. does anyone here know when it was that chri

h2o. >> hey, suze. >> good morning, y'all. >> hi. >> i got the y'all going from texas. case back in the '60s. >> yep, somebody else made that point today. >> yep. >> to me, this is my generation's emmett till, and in -- it's sad that in this day and age, -- i have a 16-year-old son and in day and age, our kids and then we're having a black president, the first black president and the burden of proof still lies on our kids' shoulders to prove that they are not suspicious. >> yep. >> you know, and that the clothes that they wear. i mean, not to suspicious to police officers or to other races. i mean, they can't walk down the street, even here, and just be a 17-year-old kid or just be a 16-year-old kid or just be -- >> right. >> human being. they have to be looked upon as either a thug or either as someone would might steal something. >> yep. >> someone who might car jack someone, and then instead of facing that fact, you know they will say that, oh, well it's the hoody. it's the baggy pants. it's this. no, it's not that. it's the point of -- that our kids stopped being cu