What do we use plant oils for?

1. What do we use plant oils for? Medicine Make up Lubricants Food Paints Fuel Foam Soaps Toothpaste Henna which makes henna oil – used as a medicine

2. What does solubility mean? How easily a substance dissolves NO Eucalyptus tree which makes eucalyptus oil – Used in cough medicine • Do oils dissolve in water? Ylang-ylang which makes ylang-ylang oil – Used as an antiseptic

3. What is the substance called when oil and water are combined? EMULSION Rose which makes rose oil – Used as a fragrance Means by which gaseous particles move through the air The movement of particles from an area of low concentration to an area of low concentration What is diffusion? Menthaarvensiswhich makes mint oil – Used in toothpaste

4. To attract pollinators Plants need to attract insects, bats and hummingbirds to transfer the pollen and create fertile seeds Why do flowers smell nice? Spruce trees which make spruce oil – This is useful for improving breathing conditions If a liquid evaporates easily What is meant by the term volatile? Iris This is used in fragrances

5. That's got to do with our sense of smell. This is the sense that makes us aware of the chemicals in our environment, and the brain marks them as good or bad smells. Chemicals that are bad for us (like ammonia or hydrogen sulphide) smell bad, so we avoid them. Chemicals that are good for us (like the natural chemicals of food) smell nice. That's why we walk away from a gutter and walk towards a nice smelling cup of coffee! Our brains treat the smells from flowers and fruits as attractive, because it often implies that there is good food to be found with them. Why do we like the smell of flowers? Cymbopoganwhich makes citronella oil – This is useful for repelling mosquitoes • What is the process called when we to extract plant oils? Distillation Tea tree oil – extracted from MelaleucaalternifoliaThis is used in medicines