Identifying the ions in an ionic compound using chemical tests

In this experiment you will carry out flame tests to identify the cations present in ionic compounds.

1. Flame Tests

Identifying cations using flame tests

Apparatus required

  • Bunsen burner, heatproof mat
  • Nichrome wire (in holder)

Ionic compounds to test

  • Sodium chloride, calcium chloride, lithium chloride, potassium chloride, copper(II) sulfate (1 g per salt per group)
  • Concentrated hydrochloric acid (teacher to control and dispense small quantities or 2 mol/dm3 hydrochloric acid may be used as an alternative)

Safety - Follow safety advice given by teacher