Heat ½ cup water until it bubbles, then add 1/4-1/2 cup salt. Stir until salt grains don't dissolve, creating supersaturated solution. Pour solution into clean container and hang pencil-string mixture. Place in cool, shaded place for single crystals, sun for clumps. Table salt takes 1-2 days, Epsom salt grows faster
Sodium bicarbonate (NaHCO3) is a translucent powder used in baking. It creates carbon dioxide gas when combined with acidic substances. Acts as an acid neutralizer in medical treatments
Experiment requires tall glass jar, food coloring, and various liquids. Lab kit available for $5, includes all necessary materials