身为一只化学狗，怎么能不分享美美哒化学世界？
身为英语爱好者，按捺不住让我们的专业英语更嗨皮的神经冲动。。。
so 真正零门槛的大科普——先上车！！！

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Hydrogen is a chemical element with chemical symbol H and atomic number 1. With an atomic weight of 1.00794 u, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass.

Hydrogen is the most abundant element in the Universe.

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Hydrogen powers the sun through nuclear fusion reactions.

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Hydrogen gas is the lightest of all gases.

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Hydrogen is a clean fuel, since burning hydrogen only gives water.

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Upon losing its only electron in water, hydrogen ions turn water acidic.

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