Atomic Structure and Periodicity- Flame Test for Metallic Ions

Flame Test for Metallic Ions

Image of two labeled burner flames, one red and one green

Description: Alcoholic/aqueous solutions of several metal salts are burned in flame-proof dishes. After a few moments, the flames give characteristic flame-test colors. The flames last a long time, in contrast to ordinary flame-tests.

This demonstration is also available on video and JCE “Chemistry Comes Alive” Vol. 2 CD-Rom

Source: UW Card Catalog

Year: 2000 Vol: 77 Page: 671

Keywords: Emission, Ionization, Metal salts, Flame, Spectra colors

Rating:

Hazard: Medium

Flammability hazard
Inhalation hazard
Acute toxicity hazard – inhalation, dermal
Explosion hazard
Aquatic toxicity hazard

Effectiveness: Average

Results are observable without guidance
Demo somewhat connected to course material
Time to results is low
Behavior contrast of systems under study is noticeable
Mild effects are seen by audience

Difficulty: Low

Simple procedures
Simple manipulations for most to perform
Use of open flames

Safety Precautions:

ABC fire extinguisher on hand
Use fire resistant surface
Perform in a well-ventilated area
Eye protection required
Gloves required
Lab coat recommended
Absorbent material on hand
Avoid exposure to mists, dust, or vapor
Note invisible, flammable vapor present

Class: Atomic Structure, Combustion, Atomic Emission

Division: General, Analytical Chemistry

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