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homologous series
compounds with same general formula and similar chemical properties because they have the same functional group
alkanes
hydrocarbons that contains only carbon single and carbon - hydrogen bond
example of alkanes + thier formula
methane = CH4
ethane = C2H6
propane = C3H8
physical property of alkanes
low melting and boiling points
weak forces of attractions
very viscous
insoluble in water but soluble in organic solvents
chemical properties of alkanes
unreactive due to strong single carbon - carbon bond
combustion
burn with excess oxygen to produce carbon dioxide and water
substitution
alkanes react with halogen in the presence of ultraviolet light