純元素混合物同化合物有咩分別?

A mixture of pure elements is different from the compounds of pure elements. If the elements are just mixed together, their original chemical properties are still the same. They are not changed. However, if the elements are chemically bonded together, the elements will no longer exhibit their original chemical properties. For example, if you just mix pure oxygen and hydrogen together in a chamber, they are just gas mixture. However, if they are chemically bond together, they become a colorless liquid called water.

若元素之間產生了化學作用的話先算化合物，沒有的只能是混合物。