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Gaokao Chemistry Practice Question

化学促进了科技进步和社会发展, 下列叙述中没有涉及化学变化的是

  1. A.《神农本草经》中记载的“石胆能化铁为铜”
  2. B.利用“侯氏联合制碱法”制备纯碱
  3. C.科学家成功将 $\mathrm{CO}_{2}$ 转化为淀粉或葡萄糖
  4. D.北京冬奥会场馆使用 $\mathrm{CO}_{2}$ 跨临界直冷制冰

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