Atomic Structure and Periodicity- Flame Test for Metallic Ions II

Flame Test for Metallic Ions II

Description: Methanol solutions of several different metal salts are sprayed into a Bunsen burner.  A ball of fire is produced that gives characteristic flame-test color.

Source: Rodney Schreiner, JCE

Year: 2001  Vol: 78, 5  Page: 640

Keywords: Spectroscopy, Emission, Visible spectrum, Properties of substances

Rating:

Hazard: High

  • Flammability hazard
  • Flammable liquids
  • Acute  toxicity hazard- central nervous system, eyes, dermal, inhalation
  • Skin corrosion hazard
  • Aquatic toxicity hazard
  • Corrosive to metals
  • Carcinogenicity hazard

Effectiveness: Excellent

  • Strong effects are seen by audience
  • Contrast of system under study is obvious
  • Time to results is very low
  • Good reliability
  • Good connection from demo to course material
  • Results are clearly observable without guidance

Difficulty: Medium

  • Reactions at non-standard conditions
  • Simple procedures
  • Simple manipulations for most to perform
  • Use of open flames

Safety Precautions:

  • Gloves required
  • Eye protection required
  • Use flame resistant surface
  • Use chemically resistant surface
  • ABC fire extinguisher on hand
  • Absorbent material on hand
  • Perform in a well-ventilated area
  • Minimum observation distance is two meters
  • Prevent release of reagents to the environment

Class: Atomic Structure, Combustion, Atomic Emission

Division: General, Analytical Chemistry, Physical Chemistry

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