I love Magic Rocks. (MEL Chemistry has a similar ‘Chemical garden experiment’.) Here is the experiment. The problem is the cost for sodium silicate and the metallic salts: copper (II) chloride, iron (III) chloride, or cobalt chloride are pricey. This is one kit worth buying if you can find it for less than $10. Check the box to see how much sodium silicate is included. The larger sets have enough to make at least two ‘gardens’.
A cheaper, crystal garden uses Mrs.Stewart’s liquid bluing. Here are the crystal garden instructions. I’ve had good results with charcoal. Alum crystals are easy to grow, too. Crystals are a great choice for Science Camp.
No comments:
Post a Comment