Fool's Gold - Periodic Table of Videos
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- เผยแพร่เมื่อ 4 ต.ค. 2024
- The Professor marks April 1 with a fascinating and nostalgic look at a substance associated with fools - iron pyrite.
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You see one of these videos and you just keep clicking on the next one.
ROFL I was just going to say the same thing I think I'm on my tenth video in a row
yep!
I like how, instead of pulling a stupid and annoying prank, we actually still got decent content.
+Connor Steppie I think the people behind the channel are more interested in educating than that.
Indeed.
So his parents bought pyrite from a pirate?
No, someone who looked like a pirate, from what his father said c:
Finley Clark From fool's pirate you mean X-D
+Atheist Sinx Pyrite Pirates are probably particularly popular at parties.
***** oh, indeed! haha... now, who wants to hear a nice story about a bridge?
Go on then. I've been waiting 4 months for this story.
Iron Pirates. Iron Pyrites. His parents were making a pun.
this makes a lot of sense lol thank you for sharing
@@robertgonzalez6046 The Professor's pronunciation of fool's gold is Iron 'Pie-rye-tee' instead of Iron 'Pie-rite'. That's why he didn't get the joke of Pyrite/Pirate.
May the professor is an iron borne
This is what happens when you bring your kids "shitty" gifts. They become knighted.
+Scy Rather igKnighted..! :D
I don't think my Zack Parise bobblehead is getting me any favors of the queen.
There is a very easy way to distinguish the 2, just streak a crystal on a piece of ceramic/pottery. Fools gold will leave a black streak while gold will leave a yellow ish streak.
I enjoy the personal touch like stories about being a boy, his parents, early days as a student and instructor, etc. In another video he mentions that several of his (step)parents and (step)grandparents were physicists. I can only imagine how emotionally valuable that stone probably is to him.
Got their kid 'Fools Gold' and a genius was born. Makes perfectly logical sense to me.
Never buy Pyrite from a Pirate! :-P
Aye, you'll be walkin the plank for that one
bromleyben2004 ya
Was it a pun? The man looked like a pyrite?;)
I love this video, and quite instructional... Can you explain further the crystallization process that occurrs in nature?
I always been amazed how a melted iron combined with suphulr around Quartz can create such beautiful crystals.
I love this professor. He looks like a meerkat who everyone wants to cuddle with. specially his hair and sense of humour. started to Love chemistry after watching these videos. long live professor. Lots of love 😍🙏👍
Uncle Scrooge will be able to tell the difference in like under a second :D
even mr krab from sponge bob square pants
Finally someone who knows their Ducktales
Well he can smell gold, so he would even do it blind folded.
"AHHHH! ITS NOT A LIQUID! ITS A GREAT MANY POECES OF MATTER THAT FORM A HARD, FLOOR LIKE SURFACE AAAAAH!"
gulgaffel gold doesnt smell . . . metals in general dont smell
Smack gold on a hard surface and it flattens, smack iron pyrite and it shatters. Easy, yet not mentioned.
3:33 Lesson of my life, gold is gold colour
My dad and I used to prospect in the hills of the Mojave desert. He told me that fools-gold sparkles more to distract fools. When dragged on the bottom of a pan, fools-gold will leave a streak while true gold should not.
I am an Architect and not a chemist but I am so addicted to your videos... you guys do a Great job!
also Gold sometimes rides with pyrite. Jeff Williams has a video on how to extract real gold from pyrite
Another difference between iron sulfide and real gold is that larger samples of iron sulfide tend to be cubical in shape, whereas larger lumps of real gold tend not to have specific shapes.
Yes, it often crystallizes into cubic shapes....real gold does not
@@miditrax I'll third this... 🤔
This Guy Is Science
Jimmy Biggums Then who was phone?
Salvatore Shiggerino steve jobs
Jimmy Biggums
Looks like Einstein's little brother.
An extremely easy way to tell if it is fool's gold or the real thing is to scrape it against a tile. If it leaves a black mark, then it is fool's gold. If the mark is yellow, then you've got the real thing.
It wouldn't need to be, but it would be advantageous to use, a porcelain tile.
That and gold forms in nuggets more than crystals.
I have some pyrite ammonites from the beach at Lyme Regis, they're all quite small but it's nice finding them.
Love these video's, i learn so much more from this guy than i did through most of my school days.
I liked the extra link of the professor's story combined with footage from East Africa
You find pyrite with other sulfide minerals. Gold is hydrothermically deposited in limestone (less often sandstone) as a native metal. Copper and zinc are frequently found with gold deposits.
The professors parents always sound like such wonderful people, I would have liked to meet them.
Young professor is kind of cute. Not going to lie.
Monica Horton Everyone has to look cute one point in their life ^ w ^
+MrHeroicDemon I look forward to that time coming for me. :)
+Shannmeister Last time I was described as cute was when I was 4 years old. It's been downhill ever since....sigh.
But the real question is... are YOU cute?
When I was a young one, my parents took us panning for gold. I thought I had found a lot of gold! But alas, pyrite.
I kept waiting for Brady to say "Ha, the sample you've been playing with is real gold! April Fools!"
what a great guy.. love the way he explains science :)
I like that Periodic Table cup! Really cool, wish I had one of these!
2:14 I like when he "ehm"-s away a mistake in his sentence constructions
I've been quite a keen collector of iron pyrite ('cus I can't afford gold) the density is massively different. Pyrite is really light.
I could watch these videos all day, so interesting
Same here, abyss walker!
I'm suppose to do my English homework, buuuut i think i'll learn chemistry instead
When I was young a family friend who was a prospector gave me a piece of rock with actual gold in it. He was taking it to be assayed. I showed it to a teacher who thought it was fools' gold.
I’m loving your videos. I used to live in Brampton miss home
The Professor Rocks, i love these videos!!!
As a trained geologist the easiest ways I know to tell pyrite (fool's gold) from gold is that pyrite is not malleable while gold is. Simply hitting the sample with a hammer will tell you whether it is gold or pyrite. Pyrite will fracture into pieces, gold will flatten but not break. The streak of these too minerals also differ, pyrite has a greenish-black streak while gold has a golden-yellow one.
this chemist is FANTASTIC
Interesting to see the photo of The Professor as a lad.
That B&W photo, plus the vid topic, remind me of the famous Humphrey Bogart movie "The Treasure of Sierra Madre." It's well worth seeing if you haven't--and it has a good "fool's gold" scene, with a practical reminder of the real relative value to humans of water vs gold!
im doing a presentation on Pyrite, this video has been a great help
Use a ceramic streak plate to determine between pyrite and real gold. Pyrite when strike on the plate will leave behind a black streak and real gold will leave behind a golden streak.
You don't need to use acid to tell the difference. Iron pyrite is easy to mechanically identify.
- MUCH less dense than gold (as prof said)
- A different color (as prof said)
- Crystalline (showing faces and interpenetrating cubic structures) while gold in its raw state is amorphous
- Hard (gold can be easily marked)
- Brittle (iron pyrite will pulverize to a glittering powder, gold will plastically deform)
- If struck with a steel tool, will readily throw sparks and smell of sulfur.
Found a cubic pyrite that changed it electric resistance as pressure on it was changed.
You can tell the difference by scratching some on an unglazed porcelain tile or the ruff edge of a broken porcelain tile. If it gives a red streak you've got gold if it leaves a shiny grey streak you've got iron pyrites. Also it looks almost identical to gold if look at it through water i.e. in a creek bed and it looks even more like gold if it's crushed up into little specks.
If you take a close look, the easiest way to quickly tell the difference is the crystalline structure of pyrite. You can see the 'sharp' and 'flat edges in it, whereas you will rarely see these features in gold. Gold is smooth and, contrary to the popular saying, does not 'glitter' in nearly the way pyrite does.
I keep hearing that a 13"x13"x13" cube of proper gold would weigh a ton (not sure if that would be a ton or tonne proper), I've always found this interesting as I can and have regularly picked up similarly sized blocks of iron.
Streak the item across an unpolished porcelain tile, gold is a gold streak, pyrite is a black streak same as the sample made through a chemical reaction. The color of the crystals is due to the interaction of light with the crystal structure itself.
the atoms do not tend to arrange themselves in much of a grid type structure, that's why. It often is seen as lumps in ore of another element from what i understand.
I got a wonderful sample of fool's gold, "huge" pyrite cubes embedded into their original matrix.
They should have asked geologists for a cubic crystal of pyrite, it's awesome.
When the professor said that he might not be able to lift that block if it were made of gold, I was curious as to about how heavy such a block would be. My best visual guess as to the block's size is 20x20x10 cm. which would translate to nearly 80 Kg (176 lb.)
I almost remember how to tell the difference without acid or scales. Gold always shines/shimmers (don't really know the correct word) but the shimmer of fools gold changes in different light. So if you move fools gold from a direct light to an indirect light the colour/amount of shimmer changes. I think it's because the light is reflected by the crystals in fools gold and so like a diamond the reflections changes as you move it. This doesn't happen with real gold. It is always gold-coloured and shines in the same way in direct light as in indirect light. Not sure if I got this exactly right but it's something like this at least.
Look! It's Iron Pyrite! That got the young chemist just as excited I'm sure.
How strong an acid do you need to dissolve iron pyrite? Does citric acid suffice? If I should ever go prospecting, can I just take a lemon with me, and cut it open and squeeze it, when I want to identify iron pyrite?
DirkT1709
Yep, it would work.
professor finds everything heavy!!! good guy
The way to distinguish is by scratch test. scratch it against something like the back of a porcine tile and if its fools gold you'll get a similar color to what is seen in labs more of a blackish, while real gold will leave a streak that is actually gold in color.
He was absolutely fanscinated.
this man is pure gold.
and he's no fool either
we have a creek near our house. its weathered and washed away and has corosion. its filled with fools gold
awesome video! i always enjoy watching these vids- you ROCK!
I can't believe I have the same Vegetable Periodic Table (in the background) in my class.
right in some tests i have taken they spell sulphur like sulfur which is correct i know that there was a exchange of the naming some elements between the english pronunciation of elements and american
I found a pyratised ammonite (I'm not sure if that is the correct term, but it is very nice to look at!)
One other difference I think is valid: I remember from my geological studies upon crystallography that pyrite has cubic structure (like NaCl) so maybe if you used a hand lens (most geologists have one... I have one because I'm an entomologist) you could see the cubes of crystalline pyrite?
@madjimms Same thing, 'pyrite' means 'fire producing' , which refers to the fact that it produces sparks when struck. It's an ancient name, nothing really to do with its chemistry.
wait wait wait, Island of Elba? in Tuscany??
When I was a kid i got sooo many pieces of that!!! (maybe they are somewhere at home?)
Oldie but goodie - I grew up with knowing this as Iron Pyrite, seeing this in crystal form. Gold is no doubt heavier and more malleable.
Where does the professor get all the "periodic" items from? Spotted a periodic mug in this video.
Btw. fool's gold is called "Katzengold" in german. It could be translated "cat's gold", but actually comes from the german word "ketzer", which means "heretic".
you are right, gold is formed in stars in the last stages of its life. all heavy elements are formed during or just before a super nova, thats why the majority of matter in the universe as we know it is H and He
When I lived in Indiana my wife and I would collect geodes and crack them open. My favorites were the ones with pyrite crystals inside, very pretty.
Young professor! Very dashing. :)
another way to tell the difference between gold and fool's gold is by tilting the sample pyrite doesn't reflect light in all directions like gold does. if you have a bigger lump of pyrite you can just strike it with a hammer to get the rotten egg smell. if you have small flakes of pyrite or gold you can try to crush them to tell the difference pyrite will shatter gold will just deform :) does are the methods i know apart from the acid test. :D
this video was real gold
Why does pyrite grow on limestone rocks in my driveway?
The professor had some crazy awesome hair even when he was a kid!
2:13 , does this mean there is likely going to be a higher concentration of Iron Sulfide near erupted volcanoes?
Knowledge is knowledge regardless of the container it is in!
Periodic professor purchased pirate pyrite promptly
Wonderful stuff!
Procrastination via educational videos is the best
I like this guy, eccentric...yes, but you could learn a whole lot from a man like this. I wish I had taken a chance at education, it sure pays off in the long run
Here's a rock, erm, we bought it off a pirate.
Fools gold is not that foolish. Gold often precipitates with iron, silica (as quartz) and other elements in hydrothermal fluids, when there's been a drop in pressure, change in pH, redox and other chemical conditions. The gold literally gets "locked in" into the pyrite crystals. So if you happen to strike at the right spot, that fools gold will actually be gold ore. The problem is the grade is likely much lower (so you need a lot of it to be economic, and not every deposit of pyrite has gold) and it requires a lot of processing to get the gold out. It's not just a matter of swishing in a gold pan by the stream or mixing with toxic mercury then burning it off.
Yes, gaseous H2S is hydrogen sulphide, but I didn't want to confuse him too much. The terms are interchangeable if not taken in strict sense. After all, it's an extremely weak acid with pathetic pKa.
You can also tell the difference between the two by taking a close look at the crystals. Gold will have more rounded edges while fool's gold has sharper edges. However the best test is to hit it with something hard, if dust falls off then it is fool's gold if not then you have the real thing.
Maybe it's the same like in german. Fool's gold is called "Katzengold" in german. It could be translated "cat's gold", but actually comes from the german word "ketzer", which means "heretic".
It's a compound coz iron and sulfur combine to give iron(II) sulfide:)
Excellent stuff as always :-)
an easier way to see if its fools gold is to scratch it, because pyrite has a black streak. Also, if you look at it under a microscope you can often see the cube shaped crystals it forms
Isn't it also called "Pyrit" ?
1:10 you're such a darling person professor, why your hair has been trying to escape from you by defying gravity since you were a child is beyond me :P
Sir I am a student from India,Tripura. I am a great enthusiast of chemistry and listen to your videos. Recently I developed a new system for finding group and periods of a given element and vice versa. But I am not getting any support for publishing it. So if you send me feedback and show me way. It would may become a new discovery in the world of chemistry.
Kunal Choudhury
class 10.
India,Tripura,Kailashahar,Unakoti Tripura
It is hard to find big chunks of pyrite
Yes, I was thinking that a pin or needle would show the difference -- that gold would allow the pin to sink into it and pyrite would resist and flake/crack. Science rules!
when are we getting some proffesor T-Shirts?
Just hit a piece with a hammer. Gold is malleable and will squish. Pyrite is not and will shatter.
do u really want to make the gold u bought deformed and out of shape when usually u buy gold for how nice it looks .-.
calvite100 it can be reforged pretty easily (but don't quote me on that)
It'd be impossible to confuse a pure rock of gold for pyrite, because pyrite can't be cast. The only time you'd question it is in ore form.
Christian Burke can't you just use a magnet to tell the diffrence?
Pyrite isn't usually magnetic
by the way, it makes a crystal detector in contact with a "cat's whisker" in a crystal radio
Iron by itself does not have magnetic propeties. But if you put it into a magnetic field, it does create its own. So it might work with pyrite, but I'm not entirely sure.
How is it not magnetic?
iron sulphide is not magnetic neither is gold pure iron is not magnetic in any case
Pure iron isn't? I want to see the experiment!
Its in a coumpound that is why..