A homologous series is a group of molecules with the same general formula and similar chemical properties.

Melting/boiling points increase with increasing number of carbon atoms. This is due to an increase in the intermolecular bonds that need to be broken to melt or boil a compound. The more atoms the more intermolecular bonds.

How does melting and boiling point change with increasing number of carbon atoms in a homologous series and why?

What is the general formula of the alkanes?

All of the carbon atoms in the molecule are joined together by single bonds.

Are alkanes soluble or insoluble in water?

What is the general formula for cycloalkanes?

Isomers are molecules that have the same chemical formula but different structural formula.

What is the general formula of the alkenes?

Hydrocarbons that contain at least one carbon-to-carbon double or triple bond

They can be used to make alcohols and polymers.

Addition of bromine solution to a hydrocarbon. If there is a colour change from brown to clear the hydrocarbon is unsaturated as the bromine has added across the carbon-to-carbon double bond. If it remains brown the hydrocarbon is saturated.

Describe an experiment to determine whether a hydrocarbon is saturated or unsaturated?

An addition reaction occurs when the carbon-to-carbon double bond on an alkene partially breaks to allow a new reactant molecule to join onto the two carbons.

An addition reaction between an alkene and hydrogen to create an alkane.

An addition reaction between an alkene and water to create an alcohol.

An addition reaction between an alkene and a diatomic halogen molecule

What is the functional group of alcohols?

As size increases, the solubility of the alcohol decreases.

How does solubility of alcohols change with increasing size?

What is the general formula for alcohols?

English (UK)

These flash cards include the following this -alkanes -alkenes -cycloalkenes -carboxilyc acids -alcohols

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Yvie Cranney

United Kingdom

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Chemistry

Chemistry Unit 2

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