Mendeleev science

Chemistry From Atoms To Reactions

Connect concepts instead of memorising isolated definitions.

From Nucleus To Periodic TableWhy Atoms Form IonsWhy Size Changes Across TableFrom Electrons To BondingElectronegativity To PolarityIsotopes To Atomic WeightFrom Mole To ParticlesEnergy In Chemical ReactionsWhy Reactions Have RatesAcids Bases And Equilibrium

换一个角度理解

把概念和一个可以观察或测量的现象联系起来，会更容易理解。先判断结果应该变大还是变小，再进行计算；最后检查单位和数量级。这样可以把公式变成一个真正描述物理世界的模型。