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在科学教学中,我们经常用到纸.用一张纸托着一杯水来证明大气压的存在;用一张纸燃烧来说明物质发生了化学变化;将固体粉末送入试管要用纸槽;称固体的质量时要各放一张大小相同的纸在天平的两盘…….纸是自然科学中最简单、最常用的实验器材.在初二学生
In science teaching, we often use paper. Use a piece of paper to hold a glass of water to prove the existence of atmospheric pressure; use a piece of paper to burn to explain that the substance has undergone chemical changes; put the solid powder into the test tube to use the paper trough; The quality of solids should be placed on the same size paper in the two plates of the balance.......Paper is the simplest and most commonly used experimental equipment in the natural sciences.