Flame colours – a demonstration

Description

This demonstration experiment can be used to show the flame colours given by alkali metal, alkaline earth metal, and other metal salts.

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
flame-colours-a-demonstra...



Apparatus Chemicals

Eye protection

Trigger pump operated spray bottles (see note 1)

Bunsen burner

Heat resistant mat(s)

Hand-held spectroscopes or diffraction gratings (optional)

 

Samples of the following metal salts (no more than 1 g of each) (see note 2):

Sodium chloride (Low hazard)

Potassium chloride (Low hazard) (see note 3)

Lithium chloride (Harmful) (see note 3)

Copper sulfate (Harmful, Danger to the environment)

Ethanol (Highly flammable), approx 10 cm3 for each metal salt, or IDA (industrial denatured alcohol) (Highly flammable, Harmful)

Refer to Health & Safety and Technical notes section below for additional information.

 

 


Read our standard health & safety guidance

 


 



 


Flame colours 

Flame tests 


This demonstration experiment can be used to show the flame colours given by alkali metal, alkaline earth metal, and other metal salts.

ADDITIONAL INFORMATION

This is a resource from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes. Each activity contains comprehensive information for teachers and technicians, including full technical notes and step-by-step procedures. Practical Chemistry activities accompany Practical Physics and Practical Biology .