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Phase change and thermo laws lecture

Added Feb 25, 2020 •

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Rio when he material can change heat is needed to melt ice or boil water when heat is being aided added to change the phase of a sub relate the state of a substance but the face is all the molecules together the temperature remains constant that you're you have a flame below something and you have to where that energy is going so that's our key for this we want to find out when we are heading heating something in the temperature is remaining constant what is the keep doing so let's see here this is what we want to look at if we took like water well with the pike got it really full let me put it in a pan and we put a flame underneath it but we keep the flame on the whole time so our energy and foot is positive we're constantly adding more and more and more more H2O install it now remember this can you have water and cold water yes can you have hot ice and yeah you don't call it hot Nicole remember the water is called hot cold because it's registering to your body. Very hot water tighten your body very cold water colder than tell me about the molecules are you at 28 compared to this year at Point a they're moving slower energy to Jungle Gym remember solids are like jungle gym in the jungle gym starts to shake more and Shake more in shape more so from A to B what's going on on this graph so what's happening rajveer people do not show what's happening to make molecules move faster start to melt now you going to start the Team Liquid H2O mixed with solid H2O so a point p melting begin tell me about the temperature between B and C is the saying is energy being added yeah energy continues to be added where is the energy going. it's melting so what do you mean by nothing is doing work on the object is breaking apart the structure right so now instead of having this Jungle Gym structure of atom we're going to have chains of atoms Slide by one another form bonds unform ride by form on form so they know it's not going to make the structure faster is starting to break apart so break apart and you're trying to break something up does it take energy to break things up does it take energy to break things off yes or no Toby Keith energy from me to see his like karate chopping it's a bunch of little tried using their chopping up the structure it's not making the molecules move faster is making it so he's wants to move away from those one honey is the bond so that means Bond I really start energy and energy to break them apart Obama SR be to see we are not give me faster what we're seeing is them being able to move apart from one another from B to C so they keep breaking up on break the bonds that make the H2O is going to break the bonds that connect one H2O to another physical at Point C no more I now it's all water now the energy can do what to the water molecules make them boo actor so that's DVD from Fida Demon Kane start to slide by each other faster and faster go from C to D here we have the heat energy is being added his making the molecules move faster what happens if what movies are at the bottom of the I'm not Warner we start to see Paul's team is actually is water vapor turning back to water in the air Dina. Why so what happened water vapor is invisible so what am I we got power water gas called nitrogen gas nitrogen at room temperature is what makes us we have to raise the temperature we call those things that turn to a gas above room temperature favors that's all it seems the same so I always wondered what was going to give it to you Thing 1 at room temperature is already in this case the other one you have to raise it up to get it to that states that you don't pay per water vapor at D what's going on from deed Bianchi Little Ninjas in there again with their karate chopping now they're dropping the James apart into little single H2O Zane go flying off as water vapor from D to E the heat energy that's coming in did they get Breaking Dawn at Point e all been broken now it's all boiled and you just tap water to paper EF if you add more heat your water vapor is going to get hotter than I have more energy just like all water isn't the same all modern tea not the same temperature so then what happened what happens if a dog have water on them in a dog keeps shaking harder and harder what eventually happens to the water molecules that are clinging onto the dog they fly out what are those what are the things on the outside of an atom electrons and when we remove electrons we call that state what is it ahead of the game there here's what we have Beyond Point F so let's look up here Beyond this point right here we're going to keep eating and eating and eventually those electrons are going to start to fly off we will continue to make molecules move faster so fast after losing electrons and then they have electric turned to it that's what electrons are flowing electrons are like and those existing Plaza so what's the important stuff for you to know from Eden CD from DVD what's going on when were adding heat in the temperature is not right Bonnie Richards he's moving letra have that a plasma get electric currents we can move electrons other place you saw it banana after a okay so first point of today Vita c and d d what's going on you got to think of the Little Ninjas in there that he's too little ninjas now breaking things apart instead of taking them to make a move faster okay second thing I want you to know about today are the first three laws it's bizarre because the first ones called the 08. What's up with that will we ever be doing now Isabella Brewster like the ocean doesn't get both boiling to haven't had an operation that's because all the molecules in the ocean is the average mean some are some are lower than our average their temperature goes Higher One Foster things to draw water Novato Southern process oil to get rid of it will there be rain like the freezer but it doesn't freeze okay overdoing your understanding why thermodynamics the zeroth law of thermodynamics they didn't they started with first law of thermodynamics recruit conservation of energy in the 16th 17th century so they came up with to pay realize things about he that energy is conserved he just turned they also realize that's up he always flows from an object of high temperature to an object of low temperature and then I started to go be a minute are we measuring the temperatures of these things do you want me to come out and tell the temperature of something else it doesn't thermometer only told you I loved you so how can a thermometer reads only if the temperature at this thing was taking it so they had to go back to make this refers to a thermodynamic after they had already gone through other ones but instead of changing the whole system in thing well this thermometer one we can't make the other laws must be say a thermometer works if we don't say a thermometer works and how it works the other watch don't make sense so this has to be our first we already have the first law everybody in the world and everybody uses that we really want to try to change the whole system we just got a way we can go back and Clippers line before number one what number comes before lunch hero and I really number but we can imagine that way thermal equilibrium so I just remember this is the thermometer rule the 08 in the thermometer rule the first law of thermodynamics the first law of thermo is the conservation of energy law which tells us that when heat is added to a system take me to transform into other forms of energy equal to the amount of heat that was added sometimes it turns into internal energy breaking bonds or making molecules move faster and sometimes it does external work as we'll see later he can he can move things I can expand into work on other thing so let's see here mostly there's some type of video see what this one's all about this one's going to stick in your head in a bad way beginning hearing cat see if you like wake up in no he did not. hope you enjoy snacks Yugi cannot be created nor destroyed okay so the first law of thermodynamics population of energy that's the way to think about it quickly and what it says if we add heat to a system returns end up in the second law of thermodynamics I'm on Excel will not flow from one object to an object that is hotter heat flows from hot to cold not cold. So this one I remember this he always blows from high temperature to low temperature so these are the ones I want you to know if it is class zero long thermometer what the first law of conservation of energy and the second law which is the keep balls from high low can I see a video about yeah look at that engineer and what is he SEC doll avello fan from what body to a haka Botox, to let you walk out song New Jack Swing cheerleader turn down The Conjuring priest entropy man call the cause of the second law of Thermodynamics relate down okay first law says we heat is work work is he that means that energy work is the change of energy system so that helps energy is conserved the second one he will not blow up his cell from one object to a hundred so it flows from hot to cold things are necessary to understand to get to our next thing which is a heat engine but before that time for a little comic strip classic rock in a punch in a sack lunch by Colin Anderson little thermodynamics check it out I know this person has a bottle of beer root beer next to a mug of coffee how can you tell the coffee shop that has little okay Stephen Curry but here is getting warmer and the coffee is getting colder how can you tell the coffee's getting colder what is happening I'm not happy now okay going to the next grade someday the office will happen and on that day I shall mock the laws of thermodynamics Huntsville your thumbs is Big Y ready for your big Halo guy look my infant not today nope not today it's not about his trying to change the laws of thermodynamics manipulating understand and how

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Phase change and thermo laws lecture

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