chemical property 化學特性,化學性質(zhì)
chemical composition ( makeup ) 化學成分
chemical agent 化學試劑
chemical reaction 化學反應(yīng)
chemical change 化學變化
chemical bond 化學鍵
chemical apparatus 化學器械
substance (matter; material) 物質(zhì)
element 元素
periodic table 周期表
hydrogen 氫
oxygen 氧
nitrogen 氮
helium 氦
carbon 碳
calcium 鈣
silicon 硅
sulfur 硫
iodine 碘