National Geographic Hydrophobic Substances

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0816448024153
FASCINATING WATER-REPELLENT SAND & GEL defy the laws of nature and don’t get wet when exposed to water!
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FASCINATING WATER-REPELLENT SAND & GEL defy the laws of nature and don’t get wet when exposed to water!
ENDLESS CHEMISTRY FUN that will mystify kids over and over — not a one-time-use experiment!
LEARN THE SCIENCE BEHIND THE SUBSTANCE with the 16 page, full-color National Geographic Learning Guide.
HIGH-QUALITY TECHNICAL COMPONENTS sourced from professional labs around the world.
100% SATISFACTION GUARANTEE. For 129 years, National Geographic has been a brand you can trust for scientific and educational excellence.

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0816448024153
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