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caption

Potassium burning in a flame producing a lilac flame. The colour of the flame is caused by electrons that have been excited to a higher energy state. When they relax they emit energy in the form of a characteristic wavelength of light. The colour of the flame is different for different elements and can be used to identify unknown substances.

headline Science Source General Science

created date 2010-02-13

credit EAST NEWS

source Science Source

byline E. R. Degginger

original transmission reference 2x1902

weight 1,84MB

size 19cm x 28cm by 300dpi

keywords - Show

ANALYSIS, ANALYTICAL, AND, BE, BEEN, BUNSEN, BURNER, BURNING, BY, CAN, CAUSED, CHARACTERISTIC, CHEMICAL, CHEMICALS, CHEMISTRY, COLOUR, COMBUSTION, DEGGINGER, DIFFERENT, ELECTRONS, ELEMENTS, EMISSION, EMISSIONS, EMIT, EMITTING, ENERGY, EXCITED, EXPERIMENT, FLAME, FLAMES, FOR, FORM, HAVE, HIGHER, IDENTIFY, IN, IS, LIGHT, LILAC, OF, POTASSIUM, PRODUCING, PURPLE, REACTION, REACTIONS, RELAX, STATE, SUBSTANCES, TEST, THAT, THE, THEY, TO, UNKNOWN, USED, WAVELENGTH, WHEN,