Rock Candy Recipe - Crystallization of Sugar - The Sci Guys: Science at Home

Welcome to science at home in this experiment we are making rock candy by crystallizing sugar. This is a simple experiment that can be done at home with some water, sugar and a stove. When a supersaturated solution of sugar cools, the sugar in the solution collects together into crystals known as Rock Candy. At the end of this episode you will be able to make your very own Rock Candy, explain what happens during crystallization and explain what a supersaturated solution is.

Equipment and Ingredients:
Sugar
Water
Measuring Cups and Spoons
Food Colouring (Optional)
Liquid flavoring extract (optional)
Pot
Stove Top
Lab Coat or Apron
Gloves
Goggles

Next Episode: Coming Soon

If you enjoyed the video remember to subscribe, comment and like us to show us you care.

[bart_simpson]

Equipment/Ingredients needed: 0:42
Sugar  
Pot  
Tall glass
Clip or clothespin wide enough to cover the top of the glass 
Wood skewers or popsicle sticks 
(Optional) Flavoring

Directions: 1:11

The first step in our experiment is to make a sugar solution to put on the stove. Add one cup of water to your pot then three cups of sugar, mix them all together until they're thoroughly mixed. Next, take one of your skewers and dip it in some water and then roll it in sugar. Once it's coated set it aside until it's dry. While you wait for your sticks to dry place the pot that contains the solution onto the stove and turn the stove up to high. Continue to stir your solution as it warms up. Once your solution begins to boil stir it rapidly until all the sugar has been mixed into the solution. Once all your sugar is mixed in this is a great time to add any flavoring or coloring. Once you're done mixing in all your sugar colors and flavors remove it from the burner. The next step in our experiment is to take your boiling solution and pour it into the glass in which you're going to grow your crystals. Let the solution cool for 10 minutes and then place the sugar-coated stick into the middle of the glass and hold it in place with the clip. Leave your solution in a warm dry place to cool as it cools crystals will begin to grow on the stick. The process of growing these crystals can take a couple of days up to a couple of weeks. Check crystals daily and make sure that the crystals growing on the stick don't come in contact with any crystals growing on the sides or bottom of the glass. If you notice they're growing close together reposition the stick so it's further away from other crystals. Once your crystals are done growing use a knife to crack the top shell of your solution. Gently remove your crystals from the solution and hang them in a new glass using the clip to hold it in place to drip and dry. Once your crystals have finished dripping and drying you are done!

[lilostitch]

The way you guys present their material is soo informative and elegant, God bless

[mattmarkarian]

The rock music joke was cringy, but great information. Also, I like your accents. And candy.

[dblond]

We had fun making the rock candy but just a suggestion, the darker the color the more difficult it is to see the process of the rock candy forming.

[dennis]

we are doing a science fair project and you guys saved us because we didn't have a question until we watched your

[DrragnXD]

The only thing i need to worry about during the crystalization process:



*ANTS*

[brendashoun]

When I was a kid in the 50’s you could buy the rock candy in a store, plus, my mom taught me how to make the rock candy.

[ariasgellyg.]

In this video or in your first experiment, how long did it take before you removed that crystals in the solution? Thank you.

[younglifestyle]

THANK YOU FOR THE HELP NOW MY SCIENCE PROJECT WILL BE SUCCESSFUL!!

[gingergaminggirl_ytgymnast]

Hi! Can You Make a video of how to make slime?

[katieterry]

Thank you guys so much now i got something to so for my science fair❤❤❤😘😘😘😘😘😘😚😚

[saipuneethreddy]

Good way of explanation to reason of crystallisation of sucrose🤗

[dedeemgkfreak]

did u add food color to the sugar solution prior to putting your sugar stick in ? thank you

[Zaptosis]

Wait hold up. We need goggles & thermal gloves to... boil water? This has to be a joke right?

[jasontoh]

Can the boiled sugar solution be reuse?

[maximussmith]

Finally a recipe that doesn't require any methylamine

[roqeyahrahman]

Could anyone help please - I can’t get the sugar to stay on the stick when I dip it into the solution!

[Sunflower]

Question can you use the same sugar solution to make more

[captleviackerman]

i love this plz make more videos of sci guys and have a good valintines i will leave more post

[keelanluxford]

A point that might have been worth saying is be careful poring the boiling solution in the glass as it may crack or break