Just showing how to figure out formal charges on atoms in a molecule or ion. I am to busy to do any experiments right now so I thought I would do this video so people know I am not done doing videos and I am still alive
We prepare a strong solution of aqueous ammonia from the reaction of ammonium chloride together with sodium hydroxide, show what happens as the ammonia gas dissolves in water, then do a few fun tests with the product.
Following from an earlier video that presented evidence of the origin of life. This brief video shows new experimental evidence of how these mechanisms might work in creating simple cells and similar biological apparatus.
The researchers disturbed the equilibrium of a closed environment and watched as the contents underwent a change from a random array to a crystal lattice.
*NOTE* The video shows primarily important definitions but does not show how to balance equations. Also I made this for fun as I am in grade 10 (as of the time this video was uploaded) *MUSIC* https://m.youtube.com/watch?v=lqPhHMwqzsY
In the illustrious words of Vinny Boberino..........UP YOUR NOSE WITH A RUBBER HOSE,,,,,,,,It is going to take a while to finish my cellulose nitrate ester video so in the mean time i got a couple easy videos like this one. I only go over the 2 main types of hoses used by home chemist although i am sure there are more types. And then i show my soxhlet apparatus in the "extra video" part at the end
ATTN: THERE IS A MISTAKE IN THE STOICHIOMETRY IN THE EQUATION AT THE END OF THE VIDEO.....IT IS Cl2 +2NaOH >>>> NaClO + NaCl + H2O and not Cl2 + 4NaOH >>>> 2NaClO + 2NaCl +2H2O............Same with iodine...........it should be I2 + 2NaOH >>>> NaIO + NaI + H2O..................... OXYACID NOMENCLATURE............Just some misc stuff showing some patterns in oxyacid nomenclature and etc...
Just another "HOW TO GET" video. Pretty pure stuff but definitely needs a slow recrystallization from water to clean it up good.....THIS IS ALSO A GOOD SOURCE FOR ANHYDROUS AMMONIA GAS NH3 OR ammonium cation
Making Sense is an award-winning tuition centre in Singapore that specialises in Chemistry tuition for A’ Level and O’ Level students. For more details, visit their https://www.makingsense-sg.com/about-us/ or call at 6802 2603 now!
When I was four, or five, years old one summer I got the idea into my head that I could use a chemistry set to make a solution that would make bees docile and they would crawl around on your arm and not fly away. We did this in my back yard and we did not get stung once.
In the video I claimed that this was before kindergarten when I was four years old, but it might have been the summer after kindergarten when I was five years old. I remember it as when I was four, but that seems very young to me now....
Making Sense use teaching methodologies specific to Chemistry that are effective in maximising learning. They are the best chemistry tuition in Singapore To know more, visit their https://www.makingsense-sg.com or call at 6802 2603 now!
We prepare Urushibara type-A nickel starting with basic nickel carbonate, preparing a nickel chloride solution, reacting with zinc powder, and then dissolving excess metal away using acid before washing the product.
We complete the steps in the sequence from para-nitrobenzoic acid to create the local anaesthetic drug Benzocaine, firstly by esterifying the acid and then by reducing it using freshly prepared sodium dithionite.
As we learned more about chemistry we discovered that it is really the study of how electrons work; learning this can give you a much deeper understanding and appreciation for the subject, so here's our quick tutorial on the basics.
After an interesting finding that phosphorus pentoxide can catalyse Friedel-Crafts reactions without an acyl chloride being needed, we undertook some experiments to find out if this was because it could perhaps generate acid anhydrides.
We perform in interesting experiment to see if a Friedel-Crafts reaction can be performed without the use of an acyl chloride. We utilise benzene and propionic acid, and aluminium chloride as a catalyst, and then add phosphorus pentoxide in an attempt to drive the reaction.
We prepare potassium thiocyanate from potassium ferrocyanide via a molten reaction with elemental sulfur and sodium carbonate. We extract and crystallise a pure solid product from the reaction mixture.
We perform the classic preparation of concentrated ('fuming') nitric acid via reaction of a nitrate salt and sulfuric acid. We then react this with phosphorus pentoxide in order to see if we can catch the never-seen-before-on-TV nitrogen pentoxide.
We originally filmed this reaction on the eve of the feast of Saint Barbara, performing the condensation of urea and diethylmalonate to produce barbituric acid, the parent molecule for barbiturate drugs.
In this video we present a 3D printed polypropylene microreactor with an integrated stirring bar and nano-electrospray needle.
The nano-ESI needle is the ion source of our microreactor, and is used to couple it directly to a mass spectrometer. The microreactor is used to analyse chemical reactions with the mass spectrometer. The reaction is analysed as it happens. We used polypropylene to 3D print the microreactor, because polypropylene is a very refractory polymer in the sense that it is neither affected by strong acids or alkaline solutions, nor by the great majority of solvents used in chemical synthesis.
This is the first 3D printed microreactor with an integrated ion source. It is also the first 3D printed microreactor with an integrated stir bar. These enable us to monitor the chemical reactions in real time.