1. Chapter 3 Activity 6 PAINTS

2. Ancient paintings Where did they get their paint from?

3. Ancient paint Ancient paints were derived from finely ground, naturally occurring minerals

4. Leonardo Da Vinci made some of his own oil paints

5. What ingredients are in paint? Pigment Binder Liquid/Solvent

6. Pigment finely ground particles or powders that are dispersed in paints, provide color produced as insoluble products of double replacement reactions May be a variety of colors depending on the metal ions that are involved in the compound

7. The mixture of cobalt(II) chloride and aluminum chloride is being homogenized Heating of the mixture in a test tube After several minutes the reaction is completed The finished product Cobalt blue pigment Pigments

8. Solutions of cadmium(II) nitrate and sodium sulfide heating the solutions precipitation reaction Filtering the precipitate Stirring the precipitate Cadmium yellow pigment

9. Verdigris pigment [Cu(CH 3 COO 2 ] 2. Cu(OH) 2. 5H 2 O The reactions that produce an insoluble compound are called DOUBLE REPLACEMENT REACTIONS Pigments

10. The reactions that produce an insoluble compound are called DOUBLE REPLACEMENT REACTIONS AgNO 3(aq) + KCl (aq) ‑‑‑‑ > AgCl (s) + KNO 3(aq) The product of this reaction that is insoluble in water is called the precipitate (ppt). It is this substance that can be used as the pigment in paints. Pigments NO 3 - precipitate

12. What ingredients are in paint? Pigment Binder Liquid/Solvent

13. Binder A substance that is mixed with the pigment to bind the pigment particles together Once the paint is dry, it also binds the pigment to the painted surface. Could be –oil (oil based paints) –acrylic resin (acrylic paints) –Egg yolk (tempera paints) –glue

14. Egg Tempera

15. What ingredients are in paint? Pigment Binder Liquid/Solvent

16. Solvent Usually a volatile liquid that is added to the pigment and binder to adjust the viscosity (resistance to flow) of the paint. It evaporates and does not become part of the paint film that remains on the surface. Not all paints contain a solvent.

17. Solvent This is the paint when it is first applied: Pigment and binders are the circles and squares. The blue is the solvent. The solvent is starting to evaporate. Pigment and binder come closer together. Paint is dry, pigment and binder have been fused together and form a tough film.

18. Bill Nye House Paint

19. How oil Paint is made

20. How Latex Paint is made

22. Smartboard review