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Chemistry

Grade 10: Chemical bonding

TermDefinition
Chemical bond A mutual attraction between two atoms resulting from the simultaneous attraction between their nuclei and the outer electrons.
Lewis dot diagram A structural formula in which valence electrons are represented by dots or crosses.
Covalent bond The sharing of electrons between atoms to form molecules.
Molecule A group of two or more atoms that are covalently bonded and that functions as a unit.
Ionic bonding The transfer of electrons to form cations (positive ions) and anions (negative ions) that attract each other to form a formula-unit.
Formula-unit The most simple empirical formula that represents the compound.
Ion A charged particle made from an atom by the loss or gain of electrons.
Anion (negative ion) A charged particle made from an atom by the gain of electrons
Cation (positive ion) A charged particle made from an atom by the loss of electrons.
A crystal lattice An orderly three-dimensional arrangement of particles (ions, molecules or atoms) in a solid structure.
Metallic bonding The bond between positive ions and delocalised valence electrons in a metal.
Valence electrons Outer electrons in the highest energy level of an atom in which there are electrons.
Created by: StiKManLabs
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