CIE A Level Chemistry复习笔记1.3.4 Ionic Bonding
Ionic Bonding: Definition As a general rule, metals are on the left of the Periodic Table and nonmetals are on the right-hand side Ionic bonding involves the transfer of electrons from a metallic e...
CIE A Level Chemistry复习笔记1.3.3 Electronegativity & Bonding
Electronegativity: Predicting Bond Formation The differences in Pauling electronegativity values can be used to predict whether a bond is covalent or ionic in character Electronegativity & cova...
CIE A Level Chemistry复习笔记1.3.2 Electronegativity Trends
Electronegativity: Trends Electronegativity varies across Periods and down the Groups of the Periodic Table Down a group There is a decrease in electronegativity going down the Group The nuclear ch...
CIE A Level Chemistry复习笔记1.3.1 Electronegativity
Electronegativity: Definition Electronegativity is the ability of an atom to attract a pair of electrons towards itself in a covalent bond This phenomenon arises from the positive nucleus’s ability...
CIE A Level Chemistry复习笔记1.2.7 Reacting Masses & Volumes
Mole Calculations The number of moles of a substance can be found by using the following equation: It is important to be clear about the type of particle you are referring to when dealing with mole...
CIE A Level Chemistry复习笔记1.2.6 Water of Crystallisation
Water of Crystallisation Water of crystallisation is when some compounds can form crystals which have water as part of their structure A compound that contains water of crystallisation is called a ...
CIE A Level Chemistry复习笔记1.2.5 Empirical & Molecular Formulae
Empirical & Molecular Formulae The molecular formula is the formula that shows the number and type of each atom in a molecule Eg. the molecular formula of ethanoic acid is C2H4O2 The empirical ...
CIE A Level Chemistry复习笔记1.2.4 Balancing Equations
Balancing Equations A symbol equation is a shorthand way of describing a chemical reaction using chemical symbols to show the number and type of each atom in the reactants and products A word equat...
CIE A Level Chemistry复习笔记1.2.3 Formulae
Formulae of Ionic Compounds Ionic compounds are formed from a metal and a nonmetal bonded together Ionic compounds are electrically neutral; the positive charges equal the negative charges Charges ...
