what is the colour of zinc oxide
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Pure ZnO is a white powder, but in nature it occurs as the rare mineral zincite, which usually contains manganese and other impurities that confer a yellow to red color. Crystalline zinc oxide is thermochromic, changing from white to yellow when heated in air and reverting to white on cooling.
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THE ZINC OXIDE IS COLOUR LESS BUT WHEN HEATED IT TURNS INTO YELLOW AND AGAIN WHEN COOLED DOWN IT BECOMES COLOURLESS.
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