The Sci Guys: Science at Home - SE1 - EP6: Crystallization of Alum - How to Grow Alum Crystals
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- Опубліковано 20 бер 2013
- Welcome to the sixth episode of The Sci guys. In this episode we will be investigating an experiment involving how to grow alum crystals by utilizing the process of crystallization. We will show you how you can explore this topic at home with a bunch of simple household items.
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Equipment and Ingredients:
Glass or Beaker
Fishing Line
Popsicle Stick
Coffee Filter or Paper Towel
Alum
Lab Coat or Apron
Goggles
Gloves
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I love how that time-lapse looks. So cool!
Thank you for explaining in a comprehensive way for the majority of people 😀
This video just saved me as I failed my attempt in making it in first try. Now i have a basis
Thanks a lot . It helped me during my exam !! 😉
Nice explanation!!!👍👍👌👌👌
Question, how do you tie the line around the craft stick? I can't seem to get it right...
This project is due in 4 Days and I have 4 different solutions ): None are growing crystals
Makenna cx That isn't good. Sorry we didn't get back to you sooner. You may need to heat the water hotter and add a lot more of each crystal substance.
Omg me too
girl same!
This reply might be 8 years too late but maybe you could try straining the first solution into a different jar. There may have been alum powder left in the jar. Or maybe it's the type of glass you used??
Also you can put a towel around the jar so it cools slowly and put a piece of cardboard on top so dust doesn't get in it.
@the sci guys so if you held the water at say, 50c instead of room temp, would you increase or decrease the speed at which they grow, or would the oly affect be the final size of the crystals grown
also is there any difference with how over saturated your solution is, as i seemed to only have small tiny crystal form on the bottle as a precpritate rather than nice growth,
if i covered the crystal in something like clear nail polish would it be safe to wear it as a neclace or would it break easily
When you can put your seed crystal into the solution??
When it is hot or when it is warm??
how do you form salt crystallization using the blue Stewart's and all. can you give some explanation too?
Thank for the video. Is it disolves if touches water after? For e.g. If made a neckles and takes shower with it? in other words after cristalsation is it change its solubility behaviour?
Hi I don't know if you'll be able to answer this,but how long did it take to make this crystal
How strong the home made crystals are? Is it hardness are strong or not ?
I am doing this for an experiment. Can you explain how this pertain to attractive forces?
can i use dis same crystal to clear silted river water?
what is supersaturation point here it is saying that during cooling when the supersaturation point is reached the separation of Crystal started what does it mean??
Ohh my god... I'm now trying it :)
So nice good job
+Sadia Monmon thanks!!
It sounds like you have a really fun school!!
The beginning of creation, nature crystals. Mica, quartz (bamboo silica).
Their uses are endless.
Thank you for the video.
How does one remove the fishing line after the experiment is finished and before submitting the crystal.
How about crystallization of MSG?
Can you add alcohol dye to the alum mix to form crystals
very cool.
Thanks!
late to the party here but, I've been using Borax for years, will Alum grow on something floating in the glass or does it have to touch it?
way easier and less confusing than videos that say i need potasium sulfate and things such as
Using a metalic spoon how genius is that😮
can all substances be crystallized?
Good
Hot water means what temperature?
Can aluminum hydroxide crystallize?
Where can I get it
would the crystal grow more if i put it in a freezer or in room temperature?
+camille sanico It's best to leave it at room temperature.
Will the crystals really power my gateways?
How much time should I reheat the solution for
ETbarcelonafan101216 Try for about a minute and then stir. You may need to reheat if you still have crystals in the water.
What is the symbol and Latin name of alum ?
Hi, I have been trying to do this experiment for some reason I still don't see any alum crystal besides the granules I tired to dissolve in my water, I waited around 4-5 hours, suggestions?
+Iris The Yveltal it can take up to 24 hours for the crystals to grow. Also you may need to mix additional alum in as it may not be saturated enough.
There are some undissolved crystal, meaning my water has enough Alum. I guess I will wait a bit, see in anything happens tomorrow.,
No crystals! :(
Prepared they sixth solution maybe it will work.
I finally got it work
+Iris The Yveltal Awesome!! It's great that you kept trying till you got it to work!!
cool I am working on crystalsnice job
Do I need distilled water, or tap water?
+Pancake Cookie Either should work.
Fantastic I like to know if these Christols can be used safely in an aquarium 👍
The commander won't let me share those secrets but with the right technology maybe?
when you get the starcraft reference
you have entered the gamer zone
in every vid you post can you put a subtitle?
Can the alum be granulated?
Granulated alum should work just fine. Just make sure you mix it a lot so as much of the alum as possible gets dissolved in the hot water.
I am trying to do this experiment, but it is taking oh so long for any crystal to grow :( I'm losing hope and feel like dumping it all. I made a solution on a Thursday afternoon and it is now Saturday morning and there's nothing. I'm doing all I'm told to. There is some Alum In my glass when I even pour it out.
Makenna cx You may need to add a lot more Alum. Did you do the experiment with very hot water and then mix in as much alum as you could? Hot water will have a much higher solubility when compared to cooler or room temperature water.
Is it okay for reheating the water through stove since i don't have microwave?
Alice L This is a reply to Alice L, because apparently the comments section won't let me reply to comments on some of our older videos. The best way to tie the string on the craft stick is to wrap the fishing line around the stick multiple times, I think we did between 5-7, then run the line under the loops starting from your first loop and going in the direction of your last, and then try and tie a knot. Let me know if that works, If you continue to have issues message us on Facebook and we can discuss.
I am doing this for my science experiment but it's a little bit different. I am testing how they grow on household items (the rate of it to be exact). So, after doing that (tieing the strings around the craft stick), how low or high would you suggest the items to be at? It's with 400mL water in a 600mL beaker. Also, the strings...does it have to be fishing lines? I couldn't find any in stores so I just used strings from a craft store. Will the strings have an impact on the outcome of the crystals?
I'm planning on re-doing the experiment.
The Amethyst Star We suggest using line like fishing line because there are no little bumps or cracks that crystals can grow on. Fishing line is smooth and crystals will not grow on it and will only grow on your crystal. I think thread will also work, you may need to double it up if the crystal gets heavy. You can try using normal string and if crystals grown on it you can always heat the water, and stir the crystals back into the water to restart the experiment. As for how high, I found that I had to adjust it after about 12 hours if the crystal was growing too close to the bottom or to high. We hung it at about the middle of the water depth, you could always go a little higher than that. Also remember you can adjust the string halfway through if it is getting too close to the bottom. We would be very interested to see your crystals when they are done. If you feel like sharing them with us, facebook us the image so we can check it out. Let us know if you have any other questions.
I don't really know where to get it and I don't exactly have a long time to experiment. Also, I noticed that the crystals have been growing on the surface of the bottom of the beaker, not on the items I had put in the solution. I am not really sure what to do since the whole point of the experiment is to see its growth on the items. By stirring, would it possibly gather around the item that I have inserted to hang in the middle? I'm worried about the experiment not being completed if I were to re-start it, since I have less than a week. I was thinking of keeping with the one I have but the problem is, I haven't been measuring the growth. I just wanted to see the growth by following the formula (and to see if it actually works) so that next time, there wouldn't be any surprises.
The Amethyst Star If you take some of the small seed crystals and tie them to your items then the crystals will grow from the seed crystals. Depending on what items you are using you may need to scratch them up or make bumps and grooves in them to make the crystals start growing on them. This can be accomplished by possibly using iron wool too scratch off a smooth finish, or to chip or dent the items. Another things that may work is scattering some alum on the items. If some alum powder is poured on the items, and it stays on the item while in the water, then the crystals should grow where the alum powder is scattered. Try that out and let us know if it helps.
I made a crystal, but it melted in the water. How to prevent that crystal from melting in water .... Plz share me about this topic....love from nepal
Everytime, before dipping the seed, you should add some alum to the solution.
Sweet :) We would love to see photos or video of your crystal. Send it to us on our Facebook group or a video reply on here.
@thesciguys
what is the symbol for alum and where can I get some ?
Akyem Prince The formula for Alum is KAl(SO4)2·12H2O. We found our container of Alum in a grocery store. It can be found either the spices, salts, baking, or pickling sections.
how come?
camille sanico hi
Wow
My crystals are too small we 😪✌️🥺
1:14 "...a bunch of..." Very precise and scientific, aren't you?
why has my hot water and alum powder gone a green colour
Ben Addicott I have no idea why it would do it. Was the water contaminated?
Ryan was talking to god
Not all substances can be crystallized. The molecules of substances like metals don't have crystalline structures, so they will not produce crystals.
Metal is crystalline after cooling from high temperatures.
What is the hardest crystals that can be made at relitivly low temperature solution.
Alum = Tawas in english
who is here from chem class
Next, add A bUnCh Of AlUm To ThE wAtEr!
......how much tho?
Till it doesn’t dissolve anymore-
Big thumbs up 👍 LETS GO BRANDON! 🇺🇸
They are definitely NOT having sex. 🤔