Properties of alkali metal compounds

Description

This experiment shows the differences in the properties of various alkali metals. Solutions are prepared from these alkali metals with the pH and temperature changes recorded. Students also get to test their obervational skills by completing flame tests from these solutions.

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
properties-of-alkali-meta...


This experiment shows the differences in the properties of various alkali metals. Solutions are prepared from these alkali metals with the pH and temperature changes recorded. Students also get to test their obervational skills by completing flame tests from these solutions.


student worksheet 

Apparatus Chemicals

Eye protection

Each pair of group of students will require:

Test-tubes in a rack, 2 or 3

Rubber bung to fit test-tube

Glass rod

White tile

Universal Indicator paper and colour chart

Wooden splints pre-soaked in distilled water, for flame tests (Note 1)

Bunsen burner

Heat resistant mat

A pH chart

Purified water

A range of solid alkali metal compounds such as:

Sodium and potassium nitrates (OXIDISING)

Sodium and potassium chlorides

Sodium and potassium sulfates

Lithium, sodium and potassium carbonates (IRRIANT)

Sodium and potassium hydroxides (CORROSIVE) - for teacher demonstration only

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

 








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.