Chapter 2-properties of matter

0 2 词汇卡 nawiju

问题		答案
pure substance 开始学习		Matter with the same composition throughout for ex. table salt (each pinch is equally as salty). Each sample has the same properties because it has a fixed and uniform composition. There are 2 classifications: elements and compounds.
element 开始学习		Substance that cannot be broken down into simpler substances. All elements are on the periodic table.