it actually reacts with tons of stuff, just nothing you would see in regular chemistry. As I said in another comment, most gold is actually extracted by reacting it with cyanide to create a water-soluble compound that can be drained out. And something like 20 million tons of gold exist in the world's oceans in the form of similar compounds.
No, just aurum There are also a few other elements with just the -um suffix: -silver = Ag = argentum -copper = Cu = cuprum -mercury = Hg = hydrargyrum -lead = Pb = plumbum -tin = Sn = stannum -iron = Fe = ferrum
@derickhaywood You shouldn't take "gold doesn't react with anything at all" as an absolute. It's a matter of speech regarding the general tendency of gold. There are very few things that will react with gold and ruin the gold. Mercury would "only" tarnish the gold by creating amalgams and make it silvery in color, which would ruin the aesthetics of a gold ring, but not dissolve or ruin the gold ring itself. You can reverse it by boiling the mercury out of the ring, which doesn't harm the gold :)
I think it's because gold, like diamonds, 1) lasts forever. It doesn't react with anything (allthough dissolvable in mercury)... a quality people appreciates :) 2) Everyone thinks it's pretty. 3) There is a fairly fixed amount of gold being mined, so the price stays fairly high. It could probably get cheaper if they mined a lot more of it, but then they would earn less and it would be a waste, and also 4) it's not thaaat abundant. Only more abundant than many other heavy metals. ;)
So it's 1.17 grams of grade 1 gold, which I assume means that it's what they call .999 gold (99.9% purity) when you wish to buy gold. With today's gold price, that little gold wire would have the value of 31.5 GBP, which is quite substantially more than 10 GBP :)
@kitty6837 You're forgiven. Gold doesn't have an oxide layer so the mercury reacts with the gold on the surface and then the amalgam allows the mercury to get into the interior of the metal. The reaction is similar to that of mercury and aluminum, but the resulting amalgam doesn't flake away like aluminum does. It just turns into a light silvery metal that doesn't look like gold.
Random question: Why is it that most (if not all) catalysts are made of precious (and expensive) metals like platinum, gold, etc? Is it because the un-reactive nature that makes them good catalysts also makes them fairly valuable or is it just pure chance that it worked out this way?
I thought you meant our controlled fusion. The reason Uranium is created radioactive however is because all of its isotopes are radioactive, but then again star fusion is totally random when coming to isotopes, you can get stable or radioactive regularly.
Well to be fair Gold is an excellent OA, in fact that's part of the reason it's so useful as a currency; almost no naturally occuring compound will corrode it. There are actually quite a few compounds that incorporate gold, however I doubt you'd see many of them in highschool chemistry, stuff like ligands, In fact one of the most effective ways to extract gold is to convert it into Au(CN)2 , a water soluble compound, after which it can be 'washed' out of the rock.
Yes, I think aqua regia is nitric and sulfuric acid. It would form gold nitrate and gold sulfate. Then you can dry the suff and heat the salts and it would decompose and you get gold powder.
@Harisdoubled a book actually. a pretty awesome one i just read called "The Disappearing Spoon." its about chemistry but its still awesome. also, the title is a reference to a neat little prank you can pull with gallium, which looks like aluminum but melts at 84 degrees Fahrenheit. So if you cast it into spoons then invite people over for soup, coffee, etc... well, you get the idea PS- gold also reacts with silver
i don't know what particle accelerator i'm talking about but it can make i think 1 million atoms of gold per hour but it would still take about 50 years to get 1 gram of gold so he is really speaking the truth that u can't get rich if u make gold atoms...
Not the Fusion that we can do. I'm talking about those dying giant stars, their tremendous gravity force, made heavier elements than iron that we have here these days. But, you're saying that fusion does not produce radioactive elements/isotopes? Cause i dont have any better explanation on how Uranium is in this planet, he just had to be produced from this stars.
Metals such as Platinum have a bp of 4530C. Certain metaloids have high bp as well. Can anyone tell me how these bp have been determined? Someone really heated them to such high temperatures and visually observed them?
Hey has anyone noticed that the screensaver on Fluffy Hair's computer is moving between TWO monitors that are next to each other with almost perfect timing?
yeah, alot of gold is used in many vastly different areas(i.e. entertainment, industry and astronautics) It is used on rockets to protect from solar radiation, becauser somehow it has unique properties with absorbing radiation, probably due to its very high density.
welllll, there could be some nitrogen in there (yellow diamonds) or boron (blue) or hydrogen (Purple i think) but these are in trace amounts so, yeah, you're kind of right.
gold is great at (reflecting/refracting?) *infrared light. Gold is also non-corrosive. Gold may be large enough to absorb some neutrons (lead is denser. In fact, there are many elements denser than gold.) There are lots of gold compounds (perhaps you meant gold alloys? The amount of compounds is irrelevant). A TV network that calls themselves mass shit bull crap says its useless in a post apocalyptic society (WTF does this even mean.)
@gaswerti Calculations are as follows :- 1 gram of gold has (Avogadro's Number) / (Atomic Mass) atoms --call it (A). In 1 year, (365.25 x 24) x 1 million atoms produced -- call it (B). No. of years required = (A) / (B) = 348,770,000,000 years !!!
Perhaps he was afraid of accidentally dropping it in Aqua regia? Anyways... this video cleared up quite a bit for me as I was always fascinated by alchemy and like, always wondering if you could possibly change the element of an atom by introducing protons or electrons to it. So... at least now I know its plausible.
wow yes, I should investigate more often when I hear about rare things, but yes in chemistry everything is posible, even compounds with an alkaly metal as the anion, the one I know is Na+ (NaL)- where L is a cyptant agent, something like a crown ether
My teacher says that gold is a highly oxidizing agent, just because is the metal with strongest electronegativity, but I don't think there could be a compound with reduced gold. Wath do you think about his bullshit...
@gaswerti You're way off the mark, dude ! At one million atoms per hour, it would take not 8.7, not even 50, but 348,770,000,000 years, i.e., about 350 billion years to make 1 gram of gold.
Alchemists tried to make gold by transferring the property of being yellow to lead, which had the properties of being heavy, solid and soft. At least one tried to do so by distilling his pee. If any alchemist made gold, it surely was not due to his understanding about how matter actually works.
This is a question to the professor, What is the difference between white gold and normal gold? I am an IGCE student in Dubai and I got asked this question by a teacher...
Crazy haired guy says he doesn't wear his ring cause it might react with mercury. Then other dude comes on and says that gold is inearth and doesn't react with anything at all. Bit confusing that.
it actually reacts with tons of stuff, just nothing you would see in regular chemistry. As I said in another comment, most gold is actually extracted by reacting it with cyanide to create a water-soluble compound that can be drained out. And something like 20 million tons of gold exist in the world's oceans in the form of similar compounds.
No, just aurum
There are also a few other elements with just the -um suffix:
-silver = Ag = argentum
-copper = Cu = cuprum
-mercury = Hg = hydrargyrum
-lead = Pb = plumbum
-tin = Sn = stannum
-iron = Fe = ferrum
0:07 That's what she said :o
@derickhaywood You shouldn't take "gold doesn't react with anything at all" as an absolute. It's a matter of speech regarding the general tendency of gold. There are very few things that will react with gold and ruin the gold. Mercury would "only" tarnish the gold by creating amalgams and make it silvery in color, which would ruin the aesthetics of a gold ring, but not dissolve or ruin the gold ring itself. You can reverse it by boiling the mercury out of the ring, which doesn't harm the gold :)
I think it's because gold, like diamonds, 1) lasts forever. It doesn't react with anything (allthough dissolvable in mercury)... a quality people appreciates :) 2) Everyone thinks it's pretty. 3) There is a fairly fixed amount of gold being mined, so the price stays fairly high. It could probably get cheaper if they mined a lot more of it, but then they would earn less and it would be a waste, and also 4) it's not thaaat abundant. Only more abundant than many other heavy metals. ;)
So it's 1.17 grams of grade 1 gold, which I assume means that it's what they call .999 gold (99.9% purity) when you wish to buy gold. With today's gold price, that little gold wire would have the value of 31.5 GBP, which is quite substantially more than 10 GBP :)
@kitty6837 You're forgiven. Gold doesn't have an oxide layer so the mercury reacts with the gold on the surface and then the amalgam allows the mercury to get into the interior of the metal. The reaction is similar to that of mercury and aluminum, but the resulting amalgam doesn't flake away like aluminum does. It just turns into a light silvery metal that doesn't look like gold.
Random question: Why is it that most (if not all) catalysts are made of precious (and expensive) metals like platinum, gold, etc?
Is it because the un-reactive nature that makes them good catalysts also makes them fairly valuable or is it just pure chance that it worked out this way?
I thought you meant our controlled fusion. The reason Uranium is created radioactive however is because all of its isotopes are radioactive, but then again star fusion is totally random when coming to isotopes, you can get stable or radioactive regularly.
Well to be fair Gold is an excellent OA, in fact that's part of the reason it's so useful as a currency; almost no naturally occuring compound will corrode it. There are actually quite a few compounds that incorporate gold, however I doubt you'd see many of them in highschool chemistry, stuff like ligands, In fact one of the most effective ways to extract gold is to convert it into Au(CN)2 , a water soluble compound, after which it can be 'washed' out of the rock.
@ 0:08
That's what she said.
Yes, I think aqua regia is nitric and sulfuric acid. It would form gold nitrate and gold sulfate. Then you can dry the suff and heat the salts and it would decompose and you get gold powder.
they said gold was inert but they also said that it is good for making rings because it doesn't oxidize for many years!
@Harisdoubled a book actually. a pretty awesome one i just read called "The Disappearing Spoon." its about chemistry but its still awesome.
also, the title is a reference to a neat little prank you can pull with gallium, which looks like aluminum but melts at 84 degrees Fahrenheit. So if you cast it into spoons then invite people over for soup, coffee, etc...
well, you get the idea
PS- gold also reacts with silver
How many protons and neutrons does gold have?
Gold can dissolve in merchury. if you actually listened he said he is afraid of his ring reacting with mercury.
i don't know what particle accelerator i'm talking about but it can make i think 1 million atoms of gold per hour but it would still take about 50 years to get 1 gram of gold so he is really speaking the truth that u can't get rich if u make gold atoms...
Not the Fusion that we can do. I'm talking about those dying giant stars, their tremendous gravity force, made heavier elements than iron that we have here these days.
But, you're saying that fusion does not produce radioactive elements/isotopes?
Cause i dont have any better explanation on how Uranium is in this planet, he just had to be produced from this stars.
@dooovde gold does not react with mergury, it 'absorbs' mercury and it gets black in colour, its called amalgamation..
Metals such as Platinum have a bp of 4530C. Certain metaloids have high bp as well. Can anyone tell me how these bp have been determined? Someone really heated them to such high temperatures and visually observed them?
Hey has anyone noticed that the screensaver on Fluffy Hair's computer is moving between TWO monitors that are next to each other with almost perfect timing?
yeah, alot of gold is used in many vastly different areas(i.e. entertainment, industry and astronautics) It is used on rockets to protect from solar radiation, becauser somehow it has unique properties with absorbing radiation, probably due to its very high density.
isnt the particle accelerater thing called a hadron collider or something
welllll, there could be some nitrogen in there (yellow diamonds) or boron (blue) or hydrogen (Purple i think) but these are in trace amounts so, yeah, you're kind of right.
gold is great at (reflecting/refracting?) *infrared light. Gold is also non-corrosive. Gold may be large enough to absorb some neutrons (lead is denser. In fact, there are many elements denser than gold.) There are lots of gold compounds (perhaps you meant gold alloys? The amount of compounds is irrelevant). A TV network that calls themselves mass shit bull crap says its useless in a post apocalyptic society (WTF does this even mean.)
"doesnt react with anything" then what about "auric acid" and "aurous acid"?
He said that Gold is "rather unreactive". Can/does Gold react with anything? Are there any known compounds containing Au atoms?
if gold reacts with mercury shouldn't that turn it into white gold and make it worth more. or is it just a discoloration like a tarnish or stain.
@gaswerti Calculations are as follows :- 1 gram of gold has (Avogadro's Number) / (Atomic Mass) atoms --call it (A). In 1 year, (365.25 x 24) x 1 million atoms produced -- call it (B). No. of years required = (A) / (B) = 348,770,000,000 years !!!
there are actually compunds know where gold has oxidation state of -1, so called aurides.
caesium auride for example, CsAu, is made up of Cs+ and Au-
Perhaps he was afraid of accidentally dropping it in Aqua regia? Anyways... this video cleared up quite a bit for me as I was always fascinated by alchemy and like, always wondering if you could possibly change the element of an atom by introducing protons or electrons to it. So... at least now I know its plausible.
Yeah, I caught that about 2 months ago. Thanks.
wow yes, I should investigate more often when I hear about rare things, but yes in chemistry everything is posible, even compounds with an alkaly metal as the anion, the one I know is Na+ (NaL)- where L is a cyptant agent, something like a crown ether
In the culture I come from, jewelery is conventionally made from copper and/or titanium. ;)
@johnmacward one theory is that gold is so dense that it sunk to the earths core when the earth was forming.
My teacher says that gold is a highly oxidizing agent, just because is the metal with strongest electronegativity, but I don't think there could be a compound with reduced gold.
Wath do you think about his bullshit...
The electronegativity in gold has nothing to do to it's oxidizing (obviously other elements do) it has a lot to do how id reacts to electricity.
@gaswerti You're way off the mark, dude ! At one million atoms per hour, it would take not 8.7, not even 50, but 348,770,000,000 years, i.e., about 350 billion years to make 1 gram of gold.
So if gold doesn't react with anything, why is Professor Martyn afraid to wear it in the lab?
So would that be called Gold Fluoride?
Alchemists tried to make gold by transferring the property of being yellow to lead, which had the properties of being heavy, solid and soft. At least one tried to do so by distilling his pee. If any alchemist made gold, it surely was not due to his understanding about how matter actually works.
This is a question to the professor,
What is the difference between white gold and normal gold?
I am an IGCE student in Dubai and I got asked this question by a teacher...
Crazy haired guy says he doesn't wear his ring cause it might react with mercury. Then other dude comes on and says that gold is inearth and doesn't react with anything at all. Bit confusing that.
ad is about gold
well what i was referring to was pure diamond
Yeah, but uuuh....either fission or fusion reactions to obtain gold, would turn them into Radioactive Gold isotopes more likely.
Copper is one of the most expensive... that's about all i know about metals, except for some facts about unununium and plutonium =]
That fro is pretty attractive.
White gold has impurities int it ( white gold is 525, pure gold is 975 and above)...
thanks
79 protons, 118 neutrons
no, Au = Aurum, its Latin name
many years meaning longer than humans have even been around.........
hmm... Aqua regia will just dissolve gold.
(right?? )
@9hello123 oh... well doesn't really change things because it's still very little gold in a long time :D
@mxy2kaxl many are more expensive, platinum, francium, caesium, and astatine is the rarest. they are all very expensive.
Gold can react with tellurium. Don't ask me how I know that.
Ah, didn't catch that the first time.
thx
yeah i guess, although both aluminum and aluminium are accepted names
If only I could harvest distant solar cores....
Currently, about $16, $17
i love gold :)
Yeah it'd go
"Will you marry me, mrs. bunny?"
White gold is a stupid alloy for jewelry. White gold jewelry looks boring, so it's plated with other metals - completely hiding the gold alloy!
how much is ten pounds in american
Carbon atoms.......nothin else
nice...
I hope you didn't need that information quickly... :P
na its to pick up chicks at the disco
fission yes, fusion though, no.
@derickhaywood Mercury coats it and tough to get off.
still not inert.
carbon
He said pence in the video by the way so more like 16 c
omg soooo thin wire, wtf , i can hardly see it :D:D:D:D
wrong! about alchemy...
lol i did but i figured out long time ago O.o
@mynameisdarthtater how do you know that? XD
rofl
uhh so?
ah k thanks man
alchemists did make gold. go do some research.