The label on my shampoo bottle listed many compounds, and, due to my interest in chemistry, most of them were familiar or had obvious functions. However, one compound stood out as puzzling: sodium chloride.
Ordinary folks can construct 13 awesome ballistic devices in their garage or basement workshops using inexpensive household or hardware store materials and this step-by-step guide. Clear instructions, diagrams, and photographs show how to build projects ranging from the simple-a match-powered rocket-to the more complex-a scale-model, table-top...
