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Suggestions for use


Baking soda
[Sodium bicarbonate, NaHCO3]
  • Supermarkets
  • Scientific suppliers
Dissolving – temporary and permanent change Alkaline solution
 It reacts with acids to produce carbon dioxide (CO2) gas.
  • Supermarkets
  • Budget retail stores
  • Action/reaction for
     hovercraft (rockets)
  • To model expanding
     universe theory
Bamboo skewers
  • Supermarkets
  • Use as axles
Benedict's solution
  • Scientific suppliers
  • Secondary schools
Testing for the presence of simple sugars Use container of hot water as source of heat. Solution contains copper sulfate (refer to Safety and Science, pages 48 and 61).


(contains sodium hypochlorite, NaHClO)

  • Supermarkets
  • For whitening paper and cleaning

Poison – irritating gas.

Do notmix with acids or ammonia because chlorine gas is produced (refer to Safety and Science, page 48).

[Sodium tetraborate]
  • Scientific suppliers
  • Making slime
Refer to page 66 of Making Better Sense of the Material World for handling precautions.

Bottles, PET

(soft drink bottles)

  • Plastics retailers
  • Educational suppliers
  • Making rockets
  • Funnels
Use only a fine-toothed saw for cutting PET bottles, not a craft knife.
Bulbs, garden
  • Garden suppliers
  • Growing
Bulbs, light
  • Electrical suppliers
  • Electrical circuits