Our free e-book of ten experiments that won't let you down! has to have crystals right at the top of the list.
It's one of those easy science experiments which is perfect for kids.
Sugar is an ideal way to grow beautiful rock candy crystals and you can add colors and spices into the mix for extra fun!
It's also a fantastic way to show kids science in action.
Growing sugar crystals can prove surprisingly tricky - we've had our failures along the way!
This recipe is tried and tested.
But I also share what not to do so you don't waste the same amount of time as we did!
I'm going to show you the method I use to make sugar crystals into rock candy with your kids because I've had my failures with growing crystals and we prefer our homeschool method which seems to work best.
Rock candy crystals are a fantastic activity to add into homeschool science activities for preschool.
Having said that, we've just been doing a homeschool rock candy experiment involving growing crystals with turmeric as a flavor and we're well into high school!
The best homeschool method we've used for making rock candy crystals is to use:
*You can use brown sugar for variety!
You can download our free printable sheet with the instructions showing you how to grow your own sugar crystals.
Here are the beautiful pictures of sugar crystals Jeni and Charley made.
Jeni explains how to do it here:
However, Jeni and Charley want to warn you about something - because making sugar crystals isn't always as simple as it sounds!
"The first stick only dried
overnight and although we left it in the solution for two weeks, hardly
anything formed on it. Maybe the sugar it was rolled in just came
off straight away and it hadn’t dried fully." ~ Jeni
So you need to be patient and really leave the stick to dry thoroughly BEFORE you suspend it in the sugar solution.
Kelly from my Courageous Homeschooling Facebook support group shared these home grown blue crystals. She explains how they made them below.
"We used potash alum stirred quickly into really hot water. Make sure it is all
dissolved and let sit for 12-14 hours. Then drain the water after the crystals have
formed and add blue food coloring." ~Kelly
Easy science experiments are a great way for kids to learn homeschool science, as our free homeschooling curriculum shows.
Your rock candy experiment has enabled you to show your kids what happens when you create a supersaturated solution by first heating a saturated sugar solution (a solution in which no more sugar can dissolve at a particular temperature) and then allowing it to cool. A supersaturated solution is unstable — so the sugar will come out of solution, forming what's called a precipitate.
Over time, the water will evaporate slowly from the solution. As the water evaporates, the solution becomes more saturated and sugar molecules will continue to come out of the solution and collect on the seed crystals on the string.
You can see some crystal experiments you can do here at the Smithsonian Institute.
I don't know if your kids are interested in any of that, but if they're like William who loves numbers in our homeschool they might be mind blown to know that their finished rock candy will be made up of about a quadrillion (1,000,000,000,000,000) molecules!
Lots more fun homeschool experiments for you to try with your kids.
Get a free e-book of my top ten science activities that won't let you down! Click on the kids experiments link below.
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