Allotrope: The different molecular forms in which an atom can exist.
Covalent bond: A bond involving the attraction of a pair of electrons and a pair of nuclei from two non-metal atoms
Diamond: An allotrope of carbon with a tetrahedral structure. Used in jewellery and in power tools, as it is the hardest material naturally occurring on Earth and can cut through virtually any solid.
Intermolecular forces: The weak forces of attraction between covalent molecules
Graphite: An allotrope of carbon in a layered structure that easily slides. Used in pencils and as a lubricant, as it transfers easily and slides easily.
Tetrahedral: An atom directly bonded with four other atoms: it has four covalent bonds. Structure of diamond.
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Section 3 a) Specification
3.1 explain the terms homologous series, hydrocarbon, saturated, unsaturated, general formula and isomerism. A homologous series is a grou...
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Metals can be placed in an order of most to least reactive, called the reactivity series. This can be remembered using an acronym: Plea... -
a) Introduction 3.1 explain the terms homologous series, hydrocarbon, saturated, unsaturated, general formula and isomerism. b) Alkanes...
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1.28 describe the formation of ions by the gain or loss of electrons An ion is formed when an atom loses an electron (It is reduced) or ga...
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