求SAT2化学和物理的知识点总结 我复习化学用的巴郎,虽说很详细,但是太详细了也.感觉主次不清复习得比较无理头. 所以我想求助各位有没有总结好的知识点,这样复习起来比较有效率,我的时间不多了啊. 举个例子吧: *Chemical periodicity: ·Atomic radii:when go from left to right,the radii decrease. ·Electronegativity:decrease down a group,increase across a period ·Ionization energy:. *Bonding: ·ionic bonds:. ·covalent bonds:. 诸如此类的,