Flame Test Colors
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4 سال پیش
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This video shows you the
This video shows you the flame test colors for the following metal salts:
Calcium chloride: Orange
Copper chloride: Blue green
Lithium chloride: Red orange
Sodium chloride: Yellow
Potassium chloride: Light violet
Strontium chloride: Red
Iron (III) chloride: White with sparks
Barium chloride: Pale yellow
Just like every person’s unique finger print, the color of light emitted by a metal when heated in a flame is unique to that metal. The emission colors can therefore be used to identify specific metals. When the metal salts are placed in the flame the electrons in each atom absorb energy. This energy is used to move the electrons from their ground state to an excited state. When the electrons move back to a lower energy level they emit the absorbed energy as a particle of light called a photon.
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4 سال پیش
در تاریخ 1399/09/27 منتشر شده
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