Edexcel IGCSE Chemistry 复习笔记1.5.6 Experiment: Finding Formulae of Compounds Formulae of Simple Compounds by Experiment Making Careful Quantitative Measurements The formulae of simple com...
Edexcel IGCSE Chemistry 复习笔记 1.5.5 Calculate Percentage Yield Calculate Percentage Yield Yield is the term used to describe the amount of product you get from a reaction In practice, you never ...
Edexcel IGCSE Chemistry 复习笔记 1.5.4 Calculate Reacting Masses Calculate Reacting Masses Chemical equations can be used to calculate the moles or masses of reactants and products To do thi...
Edexcel IGCSE Chemistry 复习笔记 1.5.3 Moles, Mass & RFM The Mole The Mole Chemical amounts are measured in moles The symbol for the unit mole is mol One mole of a substance contains the...
GCSE考试很难吗？本期我们来看看英国TS网站提到的2021年最难的5道GCSE数学真题解析！TS表示虽然他们已经尽量在学生中调查最难的GCSE数学题了，但是每个人在GCSE数学上的优点和缺点的都不同，所以不存在真正意义上...
Edexcel IGCSE Chemistry 复习笔记 1.5.2 Calculate Relative Mass Relative Formula Mass & Relative Molecular Mass We have seen previously that the symbol for the relative atomic mass is Ar ...
Edexcel IGCSE Chemistry 复习笔记 1.5.1 Word & Chemical Equations Writing Equations Nothing created - nothing destroyed However, the same atoms are always present before and after reaction They ...
Edexcel IGCSE Chemistry 复习笔记1.4.4 Electronic Configuration & Reactivity Similar Chemical Properties Chemical properties of elements in the same group Elements in the same group in th...
Edexcel IGCSE Chemistry 复习笔记 1.4.3 Classify Metals & Non-Metals Classify Metals & Non-Metals We can use properties such as electrical conductivity and acid-base character to clas...
