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What’s inside this paint?
What gives paint its color?
If you wanted to make
 your own paint, what
    would you need?
First, an ingredient to give the paint
  colour. This is called a pigment.
Some pigments start as minerals or
gems, and are ground into powder.




  (This is true cobalt blue, which comes from an
  expensive gemstone in Africa. 4 oz. of cobalt
  powder costs $215 USD, or $250 SGD)
Some pigments start as rocks or clays.




  (This is burnt sienna, which comes from a
  certain soil in Italy. You bake it in a furnace,
  hence BURNT sienna, and you grind it up.)
Some pigments come from ground-up
plants (or even juices from animals).




(This is sap green, which comes from ripe
buckthorn berries. Sap green is common, cheap,
and has been around for hundreds of years.)
Some pigments are made in a laboratory
from chemicals. These are the newest
pigments.




(This is cadmium red, which comes from a
mixture of cadmium sulfide and cadmium
selenium. Scientists have been making this
artificial colour in labs since the 1920s.)
These pigments can make oil, acrylic,
or watercolor paints, but they can also
   make pastels or colored pencils.
Also, these pigments are never
  exactly red, blue, or yellow.

Instead, a pigment might be a dull
   reddish orange or a greyish
blue-green, or a bright blue-violet.
Chemistry of paint: Where does paint come from?
Do you recognize any of the colours here?
If you start with a few, you should be able
              to mix the rest.
So to make paints, the first
ingredient you need is a pigment.
the first ingredient you
  need is a pigment



   The other ingredient you need is
    called a binder, or vehicle.
Linseed oil   +   Pigment   =   Oil paint
Acrylic Binder   +   Pigment   =   Acrylic paint
Review from last week:
    Do you remember the three
differences between oil and acrylic
              paints?

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Chemistry of paint: Where does paint come from?

  • 1. What’s inside this paint? What gives paint its color?
  • 2. If you wanted to make your own paint, what would you need?
  • 3. First, an ingredient to give the paint colour. This is called a pigment.
  • 4. Some pigments start as minerals or gems, and are ground into powder. (This is true cobalt blue, which comes from an expensive gemstone in Africa. 4 oz. of cobalt powder costs $215 USD, or $250 SGD)
  • 5. Some pigments start as rocks or clays. (This is burnt sienna, which comes from a certain soil in Italy. You bake it in a furnace, hence BURNT sienna, and you grind it up.)
  • 6. Some pigments come from ground-up plants (or even juices from animals). (This is sap green, which comes from ripe buckthorn berries. Sap green is common, cheap, and has been around for hundreds of years.)
  • 7. Some pigments are made in a laboratory from chemicals. These are the newest pigments. (This is cadmium red, which comes from a mixture of cadmium sulfide and cadmium selenium. Scientists have been making this artificial colour in labs since the 1920s.)
  • 8. These pigments can make oil, acrylic, or watercolor paints, but they can also make pastels or colored pencils.
  • 9. Also, these pigments are never exactly red, blue, or yellow. Instead, a pigment might be a dull reddish orange or a greyish blue-green, or a bright blue-violet.
  • 11. Do you recognize any of the colours here? If you start with a few, you should be able to mix the rest.
  • 12. So to make paints, the first ingredient you need is a pigment.
  • 13. the first ingredient you need is a pigment The other ingredient you need is called a binder, or vehicle.
  • 14. Linseed oil + Pigment = Oil paint
  • 15. Acrylic Binder + Pigment = Acrylic paint
  • 16. Review from last week: Do you remember the three differences between oil and acrylic paints?