This project uses hot tap water, not boiling water, so it's safer for young crystal growers. Place the crystal solution in the refrigerator and get sparkly needle-like crystals within a few minutes to a few hours. It's that easy!        1/2 cup Epsom salt      1/2 cup hot tap water      food coloring (optional)  instructions here:  http://chemistry.about.com/od/crystalrecipes/ht/cupofcrystals.htm

This project uses hot tap water, not boiling water, so it's safer for young crystal growers. Place the crystal solution in the refrigerator and get sparkly needle-like crystals within a few minutes to a few hours. It's that easy! 1/2 cup Epsom salt 1/2 cup hot tap water food coloring (optional) instructions here: http://chemistry.about.com/od/crystalrecipes/ht/cupofcrystals.htm

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make your own crystals (the epsom salt crystals were easy and quick results for short attention spans)

make your own crystals (the epsom salt crystals were easy and quick results for short attention spans)

How to Grow Epsom Salt (Magnesium Sulfate) Crystals: Epsom salt is magnesium sulfate. It's easy to grow Epsom salt crystals. The crystals typically resemble shards or spikes. Initially the crystals are clear, though they whiten over time.

How to Grow Epsom Salt (Magnesium Sulfate) Crystals: Epsom salt is magnesium sulfate. It's easy to grow Epsom salt crystals. The crystals typically resemble shards or spikes. Initially the crystals are clear, though they whiten over time.

Home-made Geodes  Required materials  Epsom salts  2 cups of warm water  3 or more eggs (we only the shells)  Food coloring (red, green, blue, and any other color you like)  Large glass  Spoon  Knife (optional)

Home-made Geodes Required materials Epsom salts 2 cups of warm water 3 or more eggs (we only the shells) Food coloring (red, green, blue, and any other color you like) Large glass Spoon Knife (optional)

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Salt and vinegar crystals are non-toxic and easy to grow. You can color the crystals with food coloring if you wish. - DEA/C.BEVILACQUA, Getty Images

Salt and vinegar crystals are non-toxic and easy to grow. You can color the crystals with food coloring if you wish. - DEA/C.BEVILACQUA, Getty Images

Science for Kids: Overnight Crystal Garden - Babble Dabble Do (uses epsom salts)
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Grow Crystals in Your Fridge in Just a Few Hours: These epsom salt crystal needles form within a matter of hours. You can grow clear crystals or color them with food coloring.

Grow Crystals in Your Fridge in Just a Few Hours: These epsom salt crystal needles form within a matter of hours. You can grow clear crystals or color them with food coloring.

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A cool idea for making interesting centerpiece luminaries -  Icy Epsom Salt Luminaries
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