EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.7.2 Covalent Bonds: Dot & Cross Diagrams Covalent Bonds: Dot & Cross Diagrams Covalent substances tend to have small molecular str...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.6.1 Formation of Ions Formation of Ions An ion is an electrically charged atom or group of atoms formed by the loss or gain of electrons This los...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.5.1 Word & Chemical Equations Writing Equations Nothing created - nothing destroyed New substances are made during chemical reactions ...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 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 subst...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.6 5 Ionic compounds: Bonds, Structure & Properties Ionic bonding The positive and negative charges are held together by the strong ele...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.6 4 Ionic Bonds: Dot & Cross Diagrams Ionic Bonds: Dot & Cross Diagrams Deducing Dot & Cross Diagrams for Ionic Compounds Sodi...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记： 1.6.3 Formulae for Ionic Compounds Formulae for Ionic Compounds The formulae of simple ionic compounds can be calculated if you know the ch...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.6.2 Common Ions Common Ions How to deduce the charge of an ion Find the number of electrons in the outer electron shell Find out if it is ...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.5.8 Empirical & Molecular Formulae Empirical & Molecular Formulae The molecular formula is the formula that shows the number and t...
