When people think of growing crystals at home, they usually reach for borax or salt. But baking soda (sodium bicarbonate) is a fantastic—and often overlooked—crystal-growing medium. Unlike sharp, needle-like borax crystals, baking soda forms beautiful, rhombic (diamond-shaped) crystals that are soft, silky, and wonderfully sparkly.
Shine a flashlight behind the jar. The crystals will glow with an icy, translucent brilliance. Better yet, look at them under a cheap microscope—you’ll see stepped layers and right-angled corners that look like a miniature futuristic city. baking soda crystals experiments
Now go make some sparkling science!