what do we use plant oils for?
DESCRIPTION
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. What does solubility mean ?. How easily a substance dissolves. NO. Eucalyptus tree which makes eucalyptus oil – - PowerPoint PPT PresentationTRANSCRIPT
What do we use plant oils for?
Make up
Food
Fuel
Medicine
Lubricants
Paints
Foam
Toothpaste Soaps
Henna which makes henna oil – used as a medicine
What does solubility
mean?
Do oils dissolve
in water?
How easily a substance
dissolves
NO
Eucalyptus tree which makes eucalyptus oil – Used in cough medicine
Ylang-ylang which makes ylang-ylang oil – Used as an antiseptic
EMULSIONWhat is the substance
called when oil and water
are combined?
What is diffusion?
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
Rose which makes rose oil – Used as a fragrance
Mentha arvensis which makes mint oil – Used in toothpaste
Why do flowers
smell nice?
To attract pollinators Plants need to attract
insects, bats and hummingbirds to transfer
the pollen and create fertile seeds
Spruce trees which make spruce oil – This is useful for improving breathing conditions
What is meant by the term volatile?
If a liquid evaporates
easily
Iris This is used in fragrances
Why do we like
the smell of
flowers?
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.
Cymbopogan which 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 Melaleuca alternifolia This is used in medicines