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Chemistry with Mr. B
United States
Приєднався 5 кві 2020
Welcome! My name is Josh Bollinger, chemistry teacher at Fort Defiance HS. This channel is made to help students who are taking my Chemistry class, as well as to entertain and teach any curious mind! Videos will cover notes, example problems, but will especially have demonstrations and other shenanigans. Enjoy!
Lab Notebook setup
We will be keeping track of all our labs and occasional notes/ classroom activities in our notebooks. This video has a brief description how we'll set it up.
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Відео
Vinegar Titration
Переглядів 9 тис.3 роки тому
Today we are titrating! Using a known concentration of sodium hydroxide, we determine the concentration of acetic acid in vinegar. This is the data collection portion only. Calculations are done on the lab handout.
Molar Volume Lab
Переглядів 8483 роки тому
In this video we do the experimental component for the Molar Volume Lab. Look for the lab assignment to know what questions to answer and what calculations to do.
Limiting Reactant Lab: Aluminum + Copper(II) Chloride
Переглядів 18 тис.3 роки тому
Limiting Reactant Lab: Aluminum Copper(II) Chloride
Lab Safety & Equipment
Переглядів 8614 роки тому
This video shows the chemistry classroom, locations and functions of the safety equipment. Additionally, the second half goes over all the lab equipment; the names and functions of each.
Ice Cream Lab-Colligative Properties
Переглядів 4,4 тис.4 роки тому
In this video I make ice cream in a bag, using colligative properties to explain how water can be colder than its freezing point of 0° Celsius.
Module 3 Solutions Notes Calculations
Переглядів 634 роки тому
This screen recording walks through the calculations found in the module 4 notes. They specifically cover the Molarity calculations and then skip ahead to the Colligative property calculations; boiling point elevation/freezing point depression.
Magic Jar Demonstration (Ft. Nala)
Переглядів 1794 роки тому
This video show the old Magic Jar trick, and explained with Intermolecular Forces and Gas properties.
Thermodynamics Notes Part 4 (EXTRA)
Переглядів 664 роки тому
These are some additional notes that are usually done in class, but will not be quizzed on this year. They deal with Hess's law, Entropy, Gibb's energy, and Spontaneity.
Superheated Steam
Переглядів 340 тис.4 роки тому
Demonstration with Mr. B about the power of superheated steam.
Thermodynamics Part 3 Notes
Переглядів 714 роки тому
These notes go over calculating the energy of phase changes, and using the phase change diagram as well as calculating the enthalpy of formation for reactions. Enthalpies of formation are found using the standard enthalpies in the back of the textbook, and using the basic Products - Reactants format.
Doritos Lab
Переглядів 7684 роки тому
In this video, I go over the Doritos Lab activity; the required materials, data collection, and steps. I also collect data for those who cannot do this at home. (Background music was used from Bensonsound.com)
Stoichiometry Notes Part 3: Limiting Reactant/Percent Yield
Переглядів 974 роки тому
Stoichiometry Notes Part 3: Limiting Reactant/Percent Yield
Stoichiometry Notes Part 2: Mass to Mass Conversions
Переглядів 964 роки тому
Stoichiometry Notes Part 2: Mass to Mass Conversions
Stoichiometry Part 1: Mole Ratios & Mole to Mole conversions
Переглядів 1394 роки тому
Stoichiometry Part 1: Mole Ratios & Mole to Mole conversions
This explain why the rumbling is so devastating
JSP hcl?
I thought for a second he said Mrbeast
On Navy aircraft carriers that was one of the first things we learned about. There are some real horror stories from pipes bursting. And with the superheated steam you may not even realize it until it's too late.
What is the limit to how hot this can't get, what about if you had twice as many coils and two burners?
Amazing !
that flame is very close to a oerfect cyan blue like when u close your eyes after looking at somthing bright
"Magic"
Is the copper pipe wearing on the outside, where it is in contact with fire, or on the inside, where it is in contact with the superheated steam? Thanks.
The outside where the oxygen is. As the water boils it pushes any gas that was in the pipe out, leaving only water vapor inside. The outside has plenty of oxygen available that reacts with the copper!
Nahh this gotta be cgi
Steam is way hotter. If you inhale Vodka fumes you will get drunk immediately and you will never have hang over
I think sticking your hand in the water would still be worse due to the higher thermal mass and better heat transfer.
Sir please put your hands into boiling water sowe can see please Sir PLEAAAASEEEE 🙏🙏🙏🙏🙏🙏🙏🙏
What do you think about having students re-write lab procedure in notebook?
I did that one year, and it definitely forces students to read the procedures beforehand, but found the time wasn't really worth it.
Great demo! Thank you. When do you introduce this lab? After gas laws or during stoichiometry?
I do my stoichiometry unit before gas laws, so I wait until my gas law unit to do this. I tie in ideal, combined, and Daltons laws in the post lab.
6:22 oh I see a Civil Defense Geiger counter there from the early 60’s!
I got that at a nuclear chemistry workshop at VCU! Very cool to show students.
woahhh that was literally Good!
Why 37.34g rather than 40g of NaOH into a liter of water?
The molar mass of NaOH is pretty much 40, but I only need to know the true molarity of the solution. It doesn't have to be 1.00 M, so the 37.34 was just what the mass happened to be.
Can I have the explanation why that heat/smoke was released? Like exothermic reaction...
Nice demonstration. Note how, as the steam gets hotter, it's harder to see, which makes it more dangerous. (... and I'm sure that plenty of the 555 comments before mine have already mentioned this important caution...)
Dihydrogen Oxide is very dangerous indeed...
taking the pie out was cute haha. rock salt is similar to ice cream salt?
4:25 Mr Bollinger demonstrates a superheated fart
ua-cam.com/video/QqbrU3Nwab4/v-deo.html "I will be showing you the chesmitry" No Not at all.
How to start a fire using water: Step 1- start a fire.
"I just made fire using water" - has a bunsen burner going...
I am really surprised... I have learned something today 👍👍👍👍
Glad to hear!
The boorish brow sequentially manage because menu indirectly exist till a ill prepared. noxious, uppity ptarmigan
That’s how we used to find leaks in the turbine hall of the power station I worked at, we used thermal imaging to look in front of us but the old tried and tested paper on a pole trick worked 100% of the time.
Woah
You have an excellent voice for teaching
Thank you! 😃
Good efforts, good experiment, good explanation, good tone of voice. 10/10, one of the best science video seen in a while.
Glad you liked it!
How can we tell if this is real if you don't stick your hand in the water or above the steam?
True....🤔
Fascinating! We often take for granted the technology that makes everyday life possible, and the potential danger that this technology can have.
Very interesting explanation. Can you do a video that explains how my wife's stare burns hotter than superheated water when I allegedly do something that she deems inappropriate?
Science continues to explain the inexplicable every year.....maybe one day!
Three states of matter. Liquid solid gas. All others require temperature to come into play ergo without temperature they do not exist.
From the blank color with text at the beginning I would have thought this would be really scuffed with low camera quality and no talking but I was very wrong. Great video!
Now I can't find anything on these,but there use to be a sort of survival heater that would drop a drop of oil and a drop of water on a super heated plate and the resulting fire was supposed to be extremely energetic.
I think this is the same principles used by bakers with steam injected ovens, to use a fluid with great thermal capacity than normal air to cause a more even maillard reaction (which can only happen above water's boiling point) to happen on the surface of bread
In these comments: brooms and people "cut in half" in equal measure.
My dad has worked in a boiler plant for as long as I can remember so he’s given me a fair few lectures about the dangers of superheated steam.
This guy is a clown. The firmament is real.
That is steam engines!
So what was the temperature at the end of the pipe?
Unfortunately if I used my thermometer, it would have busted! It only goes up to 120 C.
This guy saying he just made fire with water is akin to someone saying he just made a baby using only his penis.
Why would UA-cams' algorithm think I'd be interested to learn about Superheated Steam at 3AM?! Damn right I watched the whole thing and it was interesting but that's besides the point.
Burning paper blew my mind
How can you superheat steam? Is the oxygen/nitrogen in the atmosphere superheated because its temperature is above its boiling point?
Cool vid, but I don't think the video title is correct in two ways. First, steam is a name for water in liquid form in tiny droplets suspended in gas, which is sometimes water vapor and sometimes atmospheric air. If it turns invisible, it's water vapor: water in gas form. Second, superheating means that a something is at a temperature that normally exceeds the phase-transition temperature of it's current phase into the next phase. Water known to both superheat and supercool (basically the same concept but then for a lower energy phase), for example if you microwave demi-water in a smooth glass it can exceed 100 deg C, and demi-water cooled down in a smooth vessel can also go below 0 deg C. Superheated Vapor does not exist simply because this would imply vapor can transition into a higher state, which it can't really, because then the molecules would break and isn't water anymore. Superheat steam would imply that the steam is at a higher temp then the boiling point of water, but then the water would just evaporate, as there is plenty of surface area. Maybe this is possible, but it is highly unlikely you could actually achieve this. But this is a neat video on the destructive power of water vapor.
A bery simple and elegant introduction to the subject!
In this case you could be called Mr. BOILinger 😉