Why does zinc oxide which is white in Colour become yellow upon heating?

Related questions

1. Which ion reacts with aqueous ammonia to give a precipitate that dissolves in an excess of ammonia?
2. Is be oh 2 an acid or base?
3. Is Ca Oh 2 a strong base?
4. What happens when zinc granules are added to dilute Sulphuric acid?
5. Is Ca Oh 2 a strong electrolyte?
6. Does zinc oxide dissolve in water?
7. What happens when you mix HCl and h2so4?
8. What is the Colour of zinc powder?
9. Is BA OH 2 an Arrhenius base?
10. Is zinc hydroxide a strong or weak base?

Tags

1. #interstitial
2. #turns
3. #shows
4. #trapped
5. #oxygen
6. #heating
7. #white
8. #oxide
9. #colored
10. #reversibly
11. #neutralization
12. #yellow
13. #because
14. #loses
15. #generally
16. #crystals
17. #temperature
18. #sites
19. #color
20. #occupy
21. #defects
22. #electrons