Fun Science Facts About Elements: Density, Properties & History for Grade 8 Explore fascinating facts about elements like hydrogen, helium, osmium, gallium, carbon, and iridium in this engaging Grade 8 science video. Learn why hydrogen is the least dense element and how helium can escape Earth's gravity. Discover the incredible density and historical uses of osmium, plus the unique melting point of gallium and the versatility of carbon. Perfect for young students eager to understand elemental pr

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