CIE A Level Chemistry復習筆記1.3.7 Covalent Bonding
Covalent Bonding: Definition & Examples Covalent?bonding occurs between two?nonmetals A covalent bond involves the?electrostatic?attraction?between nuclei of two atoms and the bonding electrons...
CIE A Level Chemistry復習筆記1.3.6 Metallic Bonding
Metallic Bonding: Definition Metal?atoms are tightly packed together in?lattice?structures When the metal atoms are in lattice structures, the electrons in their outer shells are free to move throu...
CIE A Level Chemistry復習筆記1.3.5 Ionic Bonding Examples
Ionic Bonding: Examples Sodium chloride Sodium is a Group 1?metal It?loses?its outer electron to form a sodium ion with a +1 charge (Na+) Chlorine is a Group 7?non-metal It?gains?1 electron to form...
CIE A Level Chemistry復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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?...
