substance和matter当物质讲有何区别？
substance和matter都有物质的意思，1般指构成物体的素材。substance和matter表达 “物质”时的区别在于，matter是不可数名词，指构成物体的素材的总称，而substance是可数名词，指具体的某种混合物或纯净物，包括单质和化合物。如：This substance reacts quickly than that one.The substance of nitric acid is a strong oxidizer.Most matter has three states--solid, liquid and gas.
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