Question: what colour is fire and why is it that colour?

Chloe Kinsella answered on 17 Nov 2014:

Depending on what is on fire, flames can have different colours. Flames aere the part of the fire made of burning gases andtiny solid particles. Many things that you burn, like coal or wood, contain carbon. Carbon burns by combining with oxygen to make carbon dioxide, a gas. Carbon is usually not completely burned andcreates a black smoke. While the carbon particles are in the hot flame, they creat a yellow colour. So most fires give off a yellow glow.

I remember in chemistry class we testedunknown chemical powders for metals by burning them and studying the colour of the flames. For example if you burn copper the flames are green. If you burn potassiuym, the flames are violet in colour. These coloured flames are used in fireworkr. Each firework is packed with just the right mix of chemicals to create colorful lights .