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Alkali Metals Dropped in Water [Video]

In this brief, worthwhile video, a delightful British narrator guides the viewer through the alkali metals, first as they react with air, and then, beginning at the 1-minute mark, as they react with water. Wait for cesium, it’s worth it. “You can see that things gradually become more terrifying as we go down the group.”

(via /r/videos)

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