This is a double bonded oxygen attached to the parent chain. Carbonyl group These molecules...

        

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• This is a double bonded oxygen attached to the parent chain. Carbonyl group • These molecules are slightly polar and will dissolve in water but are less soluble than alcohols. R=C • They make good solvents. Aldehydes have the carbonyl group at the • Ketones have the carbonyl group in the of the carbon chain. R HR R of the carbon chain. Aldehyde Ketone Aldehydes: • Small aldehydes have unpleasant odours o Formaldehyde (methanal) is an antiseptic, disinfectant and a preservative. Larger/complex aldehydes have pleasant, flowery odours and can be used in the production of perfumes/scented oils. Naming Aldehydes: • They end with -al Butanal: Hexanal: Ketones: • Small ketones have a strong odour and are useful solvents: о 0 Acetone (propanone) is commonly used in nail polish remover but is also found in many other industrial solvents. Demo...what happened? Larger/complex ketones still have odours but are found in biology (sugars) and nature (phermones) Naming Ketones: Have the ending-one Need to use Numbers to indicate where the ketone group is I • This is a double bonded oxygen attached to the parent chain. Carbonyl group • These molecules are slightly polar and will dissolve in water but are less soluble than alcohols. R=C • They make good solvents. Aldehydes have the carbonyl group at the • Ketones have the carbonyl group in the of the carbon chain. R HR R of the carbon chain. Aldehyde Ketone Aldehydes: • Small aldehydes have unpleasant odours o Formaldehyde (methanal) is an antiseptic, disinfectant and a preservative. Larger/complex aldehydes have pleasant, flowery odours and can be used in the production of perfumes/scented oils. Naming Aldehydes: • They end with -al Butanal: Hexanal: Ketones: • Small ketones have a strong odour and are useful solvents: о 0 Acetone (propanone) is commonly used in nail polish remover but is also found in many other industrial solvents. Demo...what happened? Larger/complex ketones still have odours but are found in biology (sugars) and nature (phermones) Naming Ketones: Have the ending-one Need to use Numbers to indicate where the ketone group is I