The US 5 cent coin has been 25% nickel and 75% copper for about 140 years now. Since it looks silvery I guess it got the nickname (not a pun) of the element contributing to the appearance, nickel. Now until 1981, I think, Canadian nickels were 100% nickel. You can test this with a magnet as pure nickel is magnetic. A magnet will not attract a US 5 cent coin. The Canadian nickels are a convenient, inexpensive source of nickel metal for experimenters.
I think it is interesting that the US nickel coin is 3/4th copper yet it doesn't look even a tiny bit red. You would expect them to be a little bit pink, but I guess the source of color in metal alloys is not additive the way it is in paints. Likewise, you would expect that with 1/4 nickel content that the coins would be at least a little bit attracted by a magnet. I have magnets strong enough to pick up US paper bills (they contain magnetic ink) yet US nickels don't even wiggle a little bit when one of these magnets is brought near.
The Dutch coins mentioned by professor Poliakoff are the 1-guilder and the 2.5-guilder coins, which were in circulation from 1967 (for the 1-guilder coin) and 1969 (for the 2.5 guilder coin) till 2002 when the Netherlands adapted the Euro. The nickel coins replaced silver/copper coins (72% silver, 28% copper) of the same denomination. The silver coins were removed from circulation in 1973. The 1 and 2 Euro coins contain nickel, but are mostly copper (the outer part of the 2-Euro coin, and the inner part of the 1-Euro coin contain 25% nickel, the inner part of the 2-Euro coin and the outer part of the 1-Euro contain 5% nickel).
Nickel alloy magnets are very well known/sought after in the guitar/bass playing world, every guitar or bass player has heard of "AlNiCo" pickups (pretty much all vintage and many modern Fender/single coil and Gibson/humbucker) and speakers (most vintage Jensen, Eminence, Celestion, JBL, Altec, etc), or CuNiFe (Fender's original 70's Wide Range Humbuckers, for example) pickups.
Perhaps it's because nickel is found in some enzymes that nickel allergies are so common, the body reacting to something that it believes is trying to digest it.
in a few days I'll be confused why I'm seeing a new video in my subscriptions that I've already watched. because the extra footage videos are unlisted to make sure most people see them in the right order
Sweden has recently eliminated nickel from its coins, at least the low values, going for steel covered with copper. However I still have leftover Swedish crowns from my trip last year, with both designs of Carl XVI's head, and at least one from 1973 with Gustav VI's head.
In Venezuela in 1953, silver and nickel coins were minted between 1988 and 1989, as a result of the sharp rise in nickel prices recorded in the international market, between 1988 and 1989 there was a clandestine demonetization, as a consequence of the sharp rise in nickel prices recorded in the markets. This demonetization was carried out by groups of people who were dedicated to collecting them and removing them from the circulation by way of export smuggling. I still have some of those coins in my collection.
The Nottingham University should put up a life-sized bronze statue of professor Poliakoff. Has he gotten a Nobel Laureate for his RUclips videos already? He should!
American nickel does contain nickel. So do quarters and dimes, but originally(until 1964) quarters,dimes and half dollars were minted in 90% silver not nickel and only 5 cent coins contained nickel, hence the difference in name. That was because initially 'a dollar' was a fixed amount of silver( just over 21 grams) and not a piece of paper with a face on it. That's why a nickel is bigger than a dime. Dime follows(ed) the proportions of the silver standard dollar and nickel did not, because making a silver coin of half of size of a dime would not be practical.
Yea, back when we were still on the gold/silver/etc precious metal standard, usually just referred to concisely as "the gold standard." But like you said, some stuff had equivalent silver values as well, not just gold. It was basically all about equating money to precious metals in general (hence why we even used to have a lot more copper in our pennies, more nickel in our nickels, etc. We used to base our currency on physical amounts of precious metals with value. Now it just represents an intangible concept of value backed by the relative strength of our overall economy.)
they should do a redux on copper about why its more expensive than it used to be. i suppose the answer is related to electrical wiring. canada got rid of all the copper pennies a few years ago, possibly for the metal being worth more than the currency
The video is unlisted, meaning it doesn't appear on the NottinghamScience channel or the home page. The only way to get to it is to get a direct link, like through the video annotation. Some people will have hidden or secret videos on their channel for various purposes. A lot of the time they're unlisted because the creators don't necessarily want to make the video private, but also don't want the video to be advertised to everyone. The notice is just there to remind you that the video is unlisted and to be considerate of the creators' intentions. That said, in this case it's probably okay to share; they have a lot of extra footage videos that aren't unlisted, and there's nothing really secret about it.
The only people who care about hard currency are people who sell it (gold peddlers who prey on dopes watching Fox News), people in very unstable societies, like Sudan or Ethiopia and the paranoid. It's a nonsense concern otherwise, it's about paranoia not real life. If you want more stability in finance vote for Democrats who will break up big banks slap a transaction fee on Wall St. and cut down on borrowing for wars of choice.
ANY currency is fiat currency. Gold itself is only considered an investment based on the value it can be exchanged for. That value fluctuates far more than most state regulated currencies. Goldf was over $2000 in 1980 and dropped into the mid 300s 20 years later. It's value as a raw material is slight compared to the price in gold markets today. The concept of isolated storable value is what has made wide scale commerce possible for the last 3000 years or more. All forms of money have a degree of intrinsic instability and this is actually desirable. Instability and inflation encourage people to invest in real property, furthering economic growth. Imagine a gold based economy where people horded gold as savings rather than investing in bonds or 401ks. That society would have far less cash in circulation building businesses, financing cars and homes, and backing paychecks. Goldbugs are people who never took an economics class.
![BRASIL vs. PERÚ [4-0] | RESUMEN | ELIMINATORIAS SUDAMERICANAS | FECHA 10](http://i.ytimg.com/vi/tbyOJKXfQnI/mqdefault.jpg)
Profesor's Simplicity in explaining things is truly breathtaking
The Professor makes learning fun. ;o)
The US 5 cent coin has been 25% nickel and 75% copper for about 140 years now. Since it looks silvery I guess it got the nickname (not a pun) of the element contributing to the appearance, nickel.
Now until 1981, I think, Canadian nickels were 100% nickel. You can test this with a magnet as pure nickel is magnetic. A magnet will not attract a US 5 cent coin. The Canadian nickels are a convenient, inexpensive source of nickel metal for experimenters.
You're correct; Canadian nickels issued 1955-1981 are 100% nickel. 1982-2000 are a cupro-nickel alloy, and 2001-present are cupronickel-plated steel.
radagastwiz you can quickly separate old Canadian nickles with a magnet. I don't know of any other coins that are magnetized
It is called 'a nickel' because it was the only silvery looking coin in the US that was not made of silver.
Euro coins can be picked up with a magnet.
I think it is interesting that the US nickel coin is 3/4th copper yet it doesn't look even a tiny bit red. You would expect them to be a little bit pink, but I guess the source of color in metal alloys is not additive the way it is in paints. Likewise, you would expect that with 1/4 nickel content that the coins would be at least a little bit attracted by a magnet. I have magnets strong enough to pick up US paper bills (they contain magnetic ink) yet US nickels don't even wiggle a little bit when one of these magnets is brought near.
The Dutch coins mentioned by professor Poliakoff are the 1-guilder and the 2.5-guilder coins, which were in circulation from 1967 (for the 1-guilder coin) and 1969 (for the 2.5 guilder coin) till 2002 when the Netherlands adapted the Euro. The nickel coins replaced silver/copper coins (72% silver, 28% copper) of the same denomination. The silver coins were removed from circulation in 1973.
The 1 and 2 Euro coins contain nickel, but are mostly copper (the outer part of the 2-Euro coin, and the inner part of the 1-Euro coin contain 25% nickel, the inner part of the 2-Euro coin and the outer part of the 1-Euro contain 5% nickel).
Nickel alloy magnets are very well known/sought after in the guitar/bass playing world, every guitar or bass player has heard of "AlNiCo" pickups (pretty much all vintage and many modern Fender/single coil and Gibson/humbucker) and speakers (most vintage Jensen, Eminence, Celestion, JBL, Altec, etc), or CuNiFe (Fender's original 70's Wide Range Humbuckers, for example) pickups.
Really nice time... The best five minutes of the whole week. THANKS TO ALL THE TEAM...
Perhaps it's because nickel is found in some enzymes that nickel allergies are so common, the body reacting to something that it believes is trying to digest it.
B. Hagadesh -- That's a very interesting idea
@@ozdergekkoI agree!!
As a chemistry student myself, I couldn't help clicking the link to the extra footage. :)
just as an avid watcher of the channel.. couldn't help it :P
in a few days I'll be confused why I'm seeing a new video in my subscriptions that I've already watched. because the extra footage videos are unlisted to make sure most people see them in the right order
Nice to hear about rare experiences and experiments
When I was a boy & my family visited Sudbury, there was a huge statue of a (Canadian) nickel coin at the entrance to town. I was impressed.
I like Poliakoff almost as much as "The Klein Bottle Guy"
Canada issued pure nickel nickels for a few decades; I have one from 1949. US nickels are 25% nickle and 75% copper.
Thanks, as always, for the opportunity to see your extra footage.
ah, the radio and podcast trophy at the end. Informative video. Well done!
Sweden has recently eliminated nickel from its coins, at least the low values, going for steel covered with copper. However I still have leftover Swedish crowns from my trip last year, with both designs of Carl XVI's head, and at least one from 1973 with Gustav VI's head.
I like this videos thanks for the great work!
In Venezuela in 1953, silver and nickel coins were minted between 1988 and 1989, as a result of the sharp rise in nickel prices recorded in the international market, between 1988 and 1989 there was a clandestine demonetization, as a consequence of the sharp rise in nickel prices recorded in the markets.
This demonetization was carried out by groups of people who were dedicated to collecting them and removing them from the circulation by way of export smuggling.
I still have some of those coins in my collection.
The Nottingham University should put up a life-sized bronze statue of professor Poliakoff. Has he gotten a Nobel Laureate for his RUclips videos already? He should!
He's been knighted..............for his activities.
Esko doesn't give any credit to chemistry (eikä pidä Aurinkokuntaakaan minään), but man, you gotta love these videos. Great job!
Why publish this as extra footage when we all (?) immediately click on it.
actually only a small fraction.
People are weird (except us, of course).
Because people get bored if the video is too long
As a result of selected audience, the likes are now 718 vs 0
gosh now it's 792:1 O_O
You got it, Doc. Our $0.05 coin in common parlance is called a nickel. Can't think of any other reason than nickel composition why we'd call it that.
American nickel does contain nickel. So do quarters and dimes, but originally(until 1964) quarters,dimes and half dollars were minted in 90% silver not nickel and only 5 cent coins contained nickel, hence the difference in name.
That was because initially 'a dollar' was a fixed amount of silver( just over 21 grams) and not a piece of paper with a face on it. That's why a nickel is bigger than a dime. Dime follows(ed) the proportions of the silver standard dollar and nickel did not, because making a silver coin of half of size of a dime would not be practical.
Yea, back when we were still on the gold/silver/etc precious metal standard, usually just referred to concisely as "the gold standard." But like you said, some stuff had equivalent silver values as well, not just gold. It was basically all about equating money to precious metals in general (hence why we even used to have a lot more copper in our pennies, more nickel in our nickels, etc. We used to base our currency on physical amounts of precious metals with value. Now it just represents an intangible concept of value backed by the relative strength of our overall economy.)
The Dutch managed to mint a 10 cent coin that is quite a bit smaller than an American dime...
The dutch coins for f 0.10, 0.25, 1.00 and 2.50 were all made of Ni at least from 1967, until the introduction of the euro.
Is it possible to have a compound of copper, nitrogen and tennessine?
HM
It probably isn’t possible to have tennessine at all tbh xD
Lol I get it
What does the h5- mean in the label for the Cyclopentadienyl nickel nitrosyl?
Not h, but Greek letter eta
3:59 CuNi alloys you say ? :')
How do you make kryptonite, Poli?
Hey professor what type of chemical process did you have your hair undergo
they should do a redux on copper about why its more expensive than it used to be. i suppose the answer is related to electrical wiring. canada got rid of all the copper pennies a few years ago, possibly for the metal being worth more than the currency
Inflation alone could do it - the copper may have the same value (relative to other goods), but the penny becomes worth less as time goes on.
Why am I getting a notice saying "this video is unlisted, please be careful about sharing it?"
The video is unlisted, meaning it doesn't appear on the NottinghamScience channel or the home page. The only way to get to it is to get a direct link, like through the video annotation.
Some people will have hidden or secret videos on their channel for various purposes. A lot of the time they're unlisted because the creators don't necessarily want to make the video private, but also don't want the video to be advertised to everyone. The notice is just there to remind you that the video is unlisted and to be considerate of the creators' intentions.
That said, in this case it's probably okay to share; they have a lot of extra footage videos that aren't unlisted, and there's nothing really secret about it.
This is so called deepweb. You must be careful in here.
Because if you play it backwards it's a racist, homophobic praise of Donald Trump.
0:23 which video is he referring to, does anyone know?
Most Dangerous Chemicals - Viewer Questions
The professor's wrong sometimes!?
Interesting
It's called inflation that's made fiat money worthless not copper is expensive our fiat money has reduced in its buying power
Petar Kecman
Supply and demand also dictates the price of money.
muh federal reserve, muh gold
tohopes
muh stable monetary system, muh ability to repay debts, muh debt slave kids, muh debt payed welfare/warfare government
The only people who care about hard currency are people who sell it (gold peddlers who prey on dopes watching Fox News), people in very unstable societies, like Sudan or Ethiopia and the paranoid. It's a nonsense concern otherwise, it's about paranoia not real life. If you want more stability in finance vote for Democrats who will break up big banks slap a transaction fee on Wall St. and cut down on borrowing for wars of choice.
ANY currency is fiat currency. Gold itself is only considered an investment based on the value it can be exchanged for. That value fluctuates far more than most state regulated currencies. Goldf was over $2000 in 1980 and dropped into the mid 300s 20 years later. It's value as a raw material is slight compared to the price in gold markets today. The concept of isolated storable value is what has made wide scale commerce possible for the last 3000 years or more. All forms of money have a degree of intrinsic instability and this is actually desirable. Instability and inflation encourage people to invest in real property, furthering economic growth. Imagine a gold based economy where people horded gold as savings rather than investing in bonds or 401ks. That society would have far less cash in circulation building businesses, financing cars and homes, and backing paychecks.
Goldbugs are people who never took an economics class.
UWU
UWU
Second!