The Science Siblings love an at-home experiment. Paige and Adam Jacobson went the chemistry route with this one, concocting “elephant toothpaste.” Start by adding the food coloring to the hydrogen ...
The most common toothpaste ingredient is fluoride, which protects against cavities. Choose a toothpaste with calcium carbonate or hydrogen peroxide if you want to whiten your teeth. Avoid toothpaste ...
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