substance和matter都有物质的意思，一般指构成物体的材料。substance和matter表示“物质”时的区别在于，matter是不可数名词，指构成物体的材料的总称，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 substance of nitric acid is a strong matter has three states--solid， liquid and gas.
