Bonding And Structure Definitons Flashcards
(22 cards)
Ion
A charged particle formed when an atom gains or loses electrons
Molecular ion
A charged particle containing more than one atom
Cation
A positive ion
Anion
A negative ion
Electrostatic attraction
An attractive force which two unlike charges exert on each other when they are kept a finite distance apart
Molecule
A particle that consists of 2 or more atoms chemically bonded together
Diatomic molecule
Two atoms covalently bonded in a molecule
Allotrope
Different forms of the same element in the same physical state
Covalent bond
Formed by a shared pair of electrons
Ionic bonds
The attraction between oppositely charged ions
Van Der waals forces
Weak intermolecular forces which exists between covalently bonded molecules
Metallic bond
The attraction between delocalised electrons and the positive ion in a regular lattice
Delocalised electrons
Electrons that are free to move throughout the whole structure
Malleable
can be hammered into shape
Ductile
Can be drawn out into wires
Alloy
A mixture of two or more elements at least one must be a metal and the resulting mixture has metallic properties
Bonding
Describes how atoms or ions are held together
Structure
Describes ho atoms or ions are arranged in space
Lone pairs
Are pairs of electrons in the outer shell which are not used up in bonding
Graphene
An allotrope of carbon atom which is one atom thick sheet of graphite
Alloys equation
% of gold in alloy = (number of carats x 100 ) divided by 24
Alloy examples
Stainless steel
Solder
Brass
18 carat gold (75%)
