Colors of Elements in a Flame - Manganese(II) Chloride
Manganese(II) chloride imparts a pale yellow-green color to a flame.
Manganese(II) chloride imparts a pale yellow-green color to a flame.
Sodium chloride imparts a bright yellow-orange color to a flame.
Strontium chloride imparts a bright red color to a flame.
Photon emission is illustrated using an animation.
The reaction of a copper penny (minted pre-1982) and concentrated nitric acid (15 M) is shown. Red-brown nitrogen dioxide is generated and some of the copper dissolves to form a blue solution of copper(II) nitrate.
A piece of copper metal is heated in a flame and oxidized to black copper oxide by air. The oxidized copper is reduced when placed in a hydrogen atmosphere. When removed from the hydrogen atmosphere, the metal is again oxidized.