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The noble gases are used in illuminated (aka Neon) signs. Refer to the related link to see an illustration of the colors made by the different noble gases.
in chemistry
The colors on the color spectrum combined to produce gray are black and white.
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Yes because it's two hydrogen gases and one oxygen gas particle. Two different particles produce one a different compound
Because of all the different gases that it has.
I believe the colors are red, green, and blue.
what processes produce the different colors we see in opaque objects
Many gases are colourless, but not all. Some examples :chlorine - yellowish greenbromine - reddish browniodine - violet
The primary gas is neon. However, minor amounts of other inert gases are added to privide the different colors seen in neon signs.
Atomic spectra
absorption and reflection of different wavelengths of light
Yes, but the gas is carbon dioxide, not neon. Actual neon lights glow red. Different gases glow different colors.
White light doesn't produce different colors. The only way to make white light is tocombine light with all of the different colors. So if you already have white light, allof the colors are already there. You only have to separate them in order to see them.
A spectrum is a function of the light source. A gas will absorb / emit light based on its molecular bonds, and different gases have different bonds.
The noble gases are used in illuminated (aka Neon) signs. Refer to the related link to see an illustration of the colors made by the different noble gases.
As sunlight passes through the stratosphere, it will be scattered and produce different colors. That's why we see colors on earth.