Answer
Pure ZnO has a band gap of ~3.3eV and is therefore colorless. ZnO Powder may have a white appearance due to scattering and a layer of carbonate on the outside of particles as ZnO Reacts with CO2 in the air.
What the hell is metal oxide?
im with u on this one
Pure microcrystalline zinc oxide is white. Single crystal zinc oxide is colorless. Zinc oxide turns lemon yellow on heating and reverts to white on cooling
Its blue!!! =p
Zinc burns a whitish color
green
White-green
green
White Green
Candle burns with a yellow flame because its an incomplete combustion. The temperature of the flame also relates to its colour and also the trace metal ions present will influence the flame colour.
NaCl will burn with a brick-red colour in a non-luminous Bunsen flame.
Proper method: Take a strip of zinc and put into the hottest part of a bunsen, then place in acid (I forget which), and burn again to remove impurities. Then dip the zinc into the powdered substance and hold in the flame, noting the colour which tells you what substance it is. Simple version: Mix solution of distilled water and substance, then use a spray gun to spray solution through flame for colours.
An intense white flame is produced when magnesium burns.
A bright green color is imparted to the flame by copper chloride
You get and orange - yellow colour.
red
blue
green
With a shiny blue flame.
The flame test for strontium - a strong red color.
When Magnesium chloride is burnt in a Bunsen flame, it imparts no colour in the flame.
Candle burns with a yellow flame because its an incomplete combustion. The temperature of the flame also relates to its colour and also the trace metal ions present will influence the flame colour.
The flame test is not currently used for chrome.
To burn off anything present that may alter the colour of your test.
NaCl will burn with a brick-red colour in a non-luminous Bunsen flame.
Proper method: Take a strip of zinc and put into the hottest part of a bunsen, then place in acid (I forget which), and burn again to remove impurities. Then dip the zinc into the powdered substance and hold in the flame, noting the colour which tells you what substance it is. Simple version: Mix solution of distilled water and substance, then use a spray gun to spray solution through flame for colours.