Salt and vinegar crystals are non-toxic and easy to grow. You can color the crystals with food coloring if you wish.
Science Magic TricksFun Fire ProjectsBest Crystals for Beginners
Grade School Science ProjectsMiddle School Science ProjectsHigh School Science Projects
Science Lab Safety SignsMineral Photo GalleryElement Photo Gallery
Anne Marie Helmenstine, Ph.D. Chemistry Guide
©2013 About.com. All rights reserved.