Valentine’s Heart Crystals

We’ve made crystals using Borax so many times and it never fails to work.  This time we decided to make them for Valentine’s Day.  These are a great gift to make for friends and family and especially teachers!  They are so pretty and super easy too!

Here’s what you need to get started:

  • Borax (Found in the laundry detergent aisle)
  • Hot water (Obviously an adult will be needed to do this part)
  • pyrex measuring cup (one that can withstand hot water)
  • measuring spoons
  • pipecleaners
  • string
  • wide mouth glass jar
  • stick or pencil (we used craft sticks)

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Give each superhero a pipecleaner (we used red, pink and white for Valentine’s day) and have them shape it into a heart.

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Tie a string to the pipe cleaner and then attach to a pencil or craft stick so that the stick can rest on the top of the jar.

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Be sure the string is the right length so that the pipe cleaner shape can be fully immersed in the jar’s liquid and will not touch the bottom. (We just rolled our string on the craft stick until we got the right height.  As the crystals form, there will be a layer of crystals at the bottom of the jar and you do not want your candy cane to get stuck to it or else it will break when you try to remove it from the jar.

Add 3 tablespoons of Borax (found in the laundry detergent aisle) to the jar.

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Measure 1 cup of hot water.  Add to the jar with borax (An adult should do this part)

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Stir until the borax dissolves completely. Each one of our jars held 1 cup of water.

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Place the heart into the jar with the hot borax mixture so that the craft stick rests on top.  Make sure the pipe cleaner shapes do not touch the sides of the jar or the bottom of the jar. Once the crystals form, they will be hard, stiff and brittle.

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Within a few hours we saw the crystals forming but the next morning the superheroes saw their sparkly hearts!

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Take them out carefully from the jars and let them dry.

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The crystals are strong and heavy.  What a pretty gift to make!

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*Note of Caution: Borax is toxic if ingested and can irritate eyes.  If you have young children or pets who might ingest a broken particle, you might want to think twice about making these.

For more Valentine’s Science Activities, try:

The Science behind the Activity:

When dissolving the borax in hot water, you are creating a supersaturated solution which means you are using heat to get more borax to dissolve than you would with water at room temperature.  As the water cools, the borax “falls out of solution” and solidifies (recrystallizes) on the pipecleaner and on the bottom of the jar.

To clean the crystals off the bottom of the jar, just add more hot water and redissolve the borax and then you can pour it out easily.

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Read my original post on Borax Crystals and to see where I got my idea from.  Also, try making Candy Cane Crystals during the holidays for a perfectly sparkly tree ornament!

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Love Potions

Did your kids get way too many candies for Valentine’s Day?  Why not use some of it up with some Love powder and Love juice to make some “Love Potions”?  So easy to set up and a great way to use up that candy!

Here is what you need to get started:

  • leftover candy (we used skittles, nerds and conversations hearts, but you can use whatever you have!)
  • cups or beakers or large plastic test tubes
  • droppers
  • spoons
  • Love Powder (baking soda-I tinted mine pink)
  • Love Juice (vinegar-I tinted mine purple and red)
  • water

To make the love powder, I just placed some baking soda in a ziplock bag and added some red food coloring to it and mixed it well.  Plain white baking soda works just fine!  For the Love juice, I added red and purple food coloring to plain white vinegar.  I love colors.  So do the kids!

I placed the test tubes in a bin to contain the mess.  I gave each child an empty cup, a cup of love powder and some love juice, a dropper and cup filled with assorted colorful candies.
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They love using droppers to make precise measurements and the addition of some vinegar and baking soda to make bubbly potions!

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Pouring from the cup works just as well too!

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And for a bonus, some of the conversation hearts began “dancing” in the bubbly potions!  (This is actually another simple candy experiment that you can do at home as well!  For more details, visit my Dancing Candy Hearts experiment)

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All in all, the tots had a blast mixing and pouring and fizzing and bubbling, and we used up a lot of leftover candy experimenting instead of getting cavities:)

Check out some more of my candy science experiments and activities:

Science Behind the Activity:

This is one of my favorite activities because it allows young children to be creative and explore and investigate.  I didn’t give them any instructions, just some materials and let them have at it.  One of the girls just wanted to make things fizz.  Another child wanted to see what colors the potions would turn with different candies.  One just wanted to mix everything together.  Each child did something different.  And most importantly, they learned about cause and effect: What happens if I do this?