- Видео 538
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Scott Milam
США
Добавлен 31 май 2011
AP chemistry and IB chemistry HL videos, chemistry demonstrations, AP and IB chemistry frq solutions, physics videos and chemistry songs and parodies for reviewing the IB Chemistry HL syllabus. Epic rap battles of chemistry with showdowns between various elements and compounds.
Reversible copper (II) tartrate complex reduction to copper (I) using peroxide
A rich blue copper (II) complex is converted to copper (I) through reduction by peroxide. As the mixture is cooled upon addition of more peroxide the copper (I) oxidizes back to the blue copper (II) before repeating the reduction. #shorts
Просмотров: 252
Видео
Launching Bottles with Liquid Nitrogen
Просмотров 830Год назад
We added liquid nitrogen to 5-gallon jugs about 1/3 filled with water. The water causes the liquid nitrogen to boil rapidly. When the jug is inverted, the more dense water forms a seal and the boiling nitrogen causes a large increase in gas pressure inside of the container. This leads to lots of collisions with the side opposite of the opening and hence the acceleration of the jug into the air ...
Blacksmith Class - steel cabinet hook
Просмотров 3592 года назад
My son and I took a class on basics of blacksmithing at the Michigan Folk School in Plymouth, MI. The techniques start by flattening out the end on one side. Then curling a small decorative hook before adding a functional hook on that end. Next the other side is flattened to be able to drill a hole into that side. Finally the central portion is heated and twisted. The class was bonkers fun and ...
Using Chemical History to Enhance Student Learning
Просмотров 5772 года назад
A brief recap of chemical history from Van Helmont to the early 1900s with a focus on organic chemistry in the mid-1800s. The application of using this chemical history in an introductory high school chemistry course is discussed. The ending goes through suggestions for reading that the viewer may wish to learn more from. Slides can be found here docs.google.com/presentation/d/1wcCOf-P12G5lQXCy...
How do we know carbon dioxide has carbon in it?
Просмотров 1,1 тыс.2 года назад
Experimental evidence to show that carbon is present in carbon dioxide. The carbon dioxide is generated using carbonate and acid. Next a strip of Mg is ignited and burns in the generated carbon dioxide. A 2nd strip of Mg is burned in air to contrast with the first. The first product contains dark spots which are elemental carbon. The second is just white ash which is magnesium oxide (and maybe ...
History of Chemistry 2 Lavoisier vs Priestly
Просмотров 1 тыс.2 года назад
Phlogiston theory was used to explain various phenomena in the 1700s. Phlogiston was inconsistent and sometimes used as matter and other times a combination of matter and energy. Here we look at two reactions that today would be described as zinc sulfuric acid and zinc oxide sulfuric acid. These were a sticking point for chemists like Antoine Lavoisier because how could these two reactions resu...
History of Chemistry 1 - Boyle vs. Newton
Просмотров 5112 года назад
Robert Boyle experimented with gas pressure to find an inversely proportional relationship between the volume and pressure of a gas. Isaac Newton explained this relationship using his mathematical model of the inverse square law. The gas particles must be stationary corpuscles that exert a greater force as they are squeezed together. Boyle thought that Newton's model was adequate, but that it w...
In tHiS cLAsS We vALuE mIStaKeS
Просмотров 5822 года назад
Teachers want students to feel comfortable making mistakes. But trying to assure students only reinforces the culture we have where mistakes are honestly not valued. Instead, teachers should refocus attention from a binary system of right/wrong to a system of education that evaluates the conditions and assumptions that define whether a claim or explanation is true, useful, or neither. As a stud...
Supersaturated Sodium Acetate
Просмотров 3,3 тыс.3 года назад
Supersaturated Sodium Acetate is made by putting an excessively larger amount of sodium acetate with a tiny amount of water. After heating the salt dissolves fully. After cooling the solution remains even though it is unstable. The addition of a seed crystal causes crystallization followed by the surroundings feeling warm. What are the signs for the enthalpy and entropy changes during crystalli...
Why is 4s before 3d for electron configurations?
Просмотров 20 тыс.3 года назад
1s 2s 2p 3s 3p 4s 3d 4p Why do electron configurations have 3d orbitals out of order from the rest? Here we break down how radial and angular nodes create a situation where 3d orbitals experience a greater repulsion from other electrons than 4s electrons do. This is in spite of the fact that 4s have a further average distance from the nucleus. The end result is that 4s and 3d orbital states hav...
Hot Metal + Cold Water
Просмотров 2,8 тыс.3 года назад
5 different metals (Al, Zn, Sn, Fe, Cu) are heated to 99.0 Celsius and then placed into 58.0 g of water. The mass of the each metal is equal to the mass of water it is added to. Why does the temperature of the metal drop by much more than the water temperature increases? Al: Water changes from 19.8 °C to 31.6 °C Zn: Water changes from 19.4 °C to 26.1 °C Sn: Water changes from 19.8 °C to 23.5 °C...
Which beaker is hotter?
Просмотров 1,3 тыс.3 года назад
A tiny beaker of water is heated to about 100 degrees Celsius. A medium beaker of water is heated to about 60 degrees Celsius. Both are placed into identical large beakers of water. The tiny beaker of water causes a temperature increase of about 2 degrees. The medium beaker of water causes a temperature increase of about 5 degrees. Which beaker was hotter?
Can Crush Demo
Просмотров 2,8 тыс.3 года назад
If you came here because you have a crush on cans, you came to the wrong place...
Mason Jar Disaster
Просмотров 1 тыс.3 года назад
I was trying to do the mason jar/notecard demonstration. It did not go so well.... I think it didn't work because when I'm seated I pull the notecard more vertically than normal. But hopefully it will go better tomorrow.
Chemistry Experiment to try at home - Copper patina
Просмотров 3 тыс.3 года назад
Chemistry Experiment to try at home - Copper patina
How To Learn More In Chemistry Class
Просмотров 1,2 тыс.3 года назад
How To Learn More In Chemistry Class
Frozen Acetic Acid glacial mixed with bicarbonate
Просмотров 4,6 тыс.3 года назад
Frozen Acetic Acid glacial mixed with bicarbonate
Corona Virus Chemical Protection Scheme
Просмотров 8844 года назад
Corona Virus Chemical Protection Scheme
How to do error propagation for your IA (Internal Assessment)
Просмотров 2,6 тыс.4 года назад
How to do error propagation for your IA (Internal Assessment)
We were all here for Francium right?
Oxygen Not Included players will always get this.
Who are from icse board 🌠✨👀
I know it's an old video but I thought glacial acetic acid froze at like 16°c?
Kill me
the poor kids
Really impressive
Check your id 🪪
Lol, I got assigned this for school😭 one of the questions is ‘Include an explanation as to why the water was able to be broken apart.’ Which I don't understand-
😅😅😅😅😅😅😅
Very helpful i wish we had more people like you 😁😁
Sodium in my case: *floats on water* *ignites* *loudly explodes, that the protection screen bounces*
So good
We have all had these globally available batteries in our homes for decades, we must now ask ourselves: have we been scammed? have we something in the house that is essentially a good deal less safe than we previously thought?, is it time to move our ever-growing collections of batteries to a location external to the house where if they explode they can do no harm?
It's kind of bizarre how water puts out fire, yet simultaneously causes it here
It real 1cubic decimeter is equal 10*10*10 cubic centimetres or 1,000 cubic centimetres is equal 1,000 mililitter and equal 1litter Therefore 1 cubic decimeter is equal 1 litter
why would you even kill them in the first place? they protect your crops and have lots more benefits then you’d think
that dont look like salt to me
is this why people spontaniously combust? To Much salt in body?
Now this is what a class is when a teacher KNOWS his stuff. The most amazingly simple way of explaining smt of higher level needs exceptional skills. Respect ! 🙏 and its the first time i forgot that the vedio was so long ( educational vedio wise ). Thats magic
HES NO TYLER DEWITT
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Ja sam sigma in ohio rizzler
There is no control variable
Is the glowing splinter test not for oxygen?
Test ppm
This guy
What are the two beakers contains initially?
This is the best lecture
How much concentration of calcium nitrate
This man is so real
LET HIM COOK!
what was the molarity of the phosphoric acid
Sodium+water=💥😂
My chemistry teacher once showed us the reaction of water and sodium. So sad that I cannot show it to my students now because there are so many limitations on chemicals in the place where I live now
thanksssssssssssssssssssssss it worked
Dumbass
It's useful tysm
Keep your day job because your recording skills are horrendous.
Thank you so much. Very helpful.
What happens when you eat these rocks?
Does it explode due to the Hydrogen in the water? (to answer my own question, yes it is)
Butter knife strong as shit
What kind of paint should be used in polyurethane?
Z👨👩👧👯♂🏃🏼♀💆🏻👨👩👧👧👩👩👦👚👝🩲🎓🩱🥿🩴
My cats refuse to touch it. They know
Haha I’m glad it’s not just me that has to make sure my floppy rubber tubes connected to the condenser are crushing under their own weight and have to be lifted to keep full flow!