The olive plant，Olea europaea，is grown in many parts of the world．The fruits of the plant（olives） and the oil that can be obtained from the fruits（olive oil），provide food for humans． Triglycerides are the main type of lipid in olive oil．They are synthesised in the olive plant from glycerol and fatty acids． Scientists can analyse samples of different olive oils to identify： －the fatty acids used to synthesise triglycerides －the composition of the different triglycerides present． Glycerol is soluble in water. Triglycerides are insoluble in water. Explain why water is a good solvent for some substances such as glycerol, but is a poor solvent for substances such as triglycerides. ............................................................................................................................................... . ............................................................................................................................................... . ............................................................................................................................................... . ............................................................................................................................................... . .........................................................................................................................................

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