Video: Why seashells are tougher than chalk
Seashells are made mostly of calcium carbonate, also known as chalk, a mineral soft and crumbly enough to use for sidewalk doodles.
Yet seashells are tough and resilient.
In this video, Reactions explains why seashells are so different, and why you can't use them to draw on your driveway:
Provided by American Chemical Society
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Video: Why seashells are tougher than chalk (2018, June 7)
retrieved 16 August 2024
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