* State some sources of vegetable oil (G) ** Draw simple diagrams to explain the difference between saturated and unsaturated fats (F) *** Compare saturated and unsaturated oils and include the health consequences for both (E)

Where do vegetable oils come from?

Extracting Vegetable Oil

Olive oil Farmer collects the seeds The seeds are taken to a factory where they are crushed and pressed to extract the oil Olive oil

Sunflower oil

How do we get sunflower oil? Extracting sunflower oil from the seeds

Sunflower oil Farmer collects the seeds The seeds are taken to a factory where they are crushed and pressed to extract the oil The oil is dissolved in a solvent, the solvent is removed by distillation Impurities such as water are also removed to leave pure vegetable oil. Sunflower oil

Distillation

Saturated oils tend to be solid at room temperature, and are sometimes called vegetable fats instead of oils. This makes them suitable for making margarine, or for commercial use in the making of cakes and pastry.

Unsaturated oils tend to be liquid at room temperature, and are useful for frying food. They can be divided into two categories: Monounsaturated fats have one double bond in each fatty acid Polyunsaturated fats have many double bonds.

Experiment write up Scientists have to write down how they did an experiment so others can test their method and see of they can repeat their results This experiment should have these sections Title An experiment to find out… An investigation to find out… How do you… Diagram A diagram showing how you do the experiment. In pencil – not pen or colour Method We started by… then we ….. We mixed… following this we…. We ground up… after this we… Results We found out … We discovered… Our data tells us …