All Structure and bonding articles – Page 13

  • A photograph showing crystals of metamizole under microscope
    Lesson plan

    How are crystals made? | 11-14 years

    Use this lesson plan for 11–14 year olds to introduce the idea that crystals form as a substance cools, and explore how cooling rate affects crystal size.

  • shiny metal

    Salty solvents – ionic really


    Ionic compounds are usually high melting point solids. But mix together a powdered organic salt with aluminium chloride and the result is a clear, colourless, 'ionic liquid'

  • A photograph of part of a crystal of sodium arsenate under polarized light, highlighting its crystalline structure against a black background

    Crystal chemistry

    Find practical experiments, an interview and other activities for 11–16 year olds, examining the chemistry of crystals in scientific and everyday contexts.