Paints and pigments

[Kiera]

Can you help with the following questions?

1) Most thermochromic pigments change from a particular colour to colouress. How do they ensure a greater range of colours is available?
2) Thermochromic paints come in a limited range of colours. If a green paint becomes yellow when heated explain what the mixture contains and how it changes colour.
3) A pigment that stores absorbed energy is called?
4) What does it release that energy as?
5) Where are phosphorescent pigments used?
6) What have phosphorescent pigments replaced and why?

Thanks

[gen2]

Hi Kiera, I think you will find a general reluctance, by the people on this site, to answer homework questions for you. If you show you have made an effort and are struggling to understand something then you are much more likely to get help if your question shows that.

As far as I am concerned, this is as far as I am prepared to help:-
I think Wikipedia is a good place to start.
http://en.wikipedia.org/wiki/Thermochromism

[Kiera]

Thanks. Have gone on the internet, dont understand so will go back to the teacher. Most of the homework is done.