“石灰石”的概念、定义、翻译、参考文献-科学参考

　

单词	石灰石
释义	石灰石 Encyclopedia 工学钙化合物释 calcium carbonate石灰石主要成分碳酸钙（CaCO3），理论上由氧化钙（CaO，56.04%）和二氧化碳（CO2，43.96%）组成。一般为浅灰、深灰色，含杂质多时颜色发生变化，密度为2.93克/厘米3，熔点为825℃，性脆、硬度小、无臭、无味。露置空气中无反应，不溶于水、醇，但在含有铵盐或三氧化二铁的水中溶解。在800℃以下的范围内，微晶体石灰石的平均热膨胀系数为（4.5～5.0)×10-6/℃，而粗晶体则增加到10.1×10-6/℃。加热到1000～1200℃时即分解成氧化钙和二氧化碳。 Chemistry ＞无机化学＞无机化学基本概念与无机化合物＞释义 limestone石灰石
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