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Technical data

Osmosis: a "chemical garden"

Item No. P7160000
Principle

Salts react with water glass by dissolving partly but also by forming a slllcate envelope. Due to a diffusion through this envelope (osmosis), an increased internat pressure is generated which causes the crystals to "grow".

Tasks

Prepare a "chemical garden" by means of salt crystals.

 

Benefits

  • Easy teaching and efficient learning by using interactive experimentation PHYWE-Software
  • Experiment is part of a complete solution set with experiments for the topic acids, alkalis and salts matched with international curriculum: all topics are covered

 

Scope of supply

Iron-III chloride, 250 g 30069-25 1
Copper-II sulphate,cryst. 250 g 30126-25 1
Zinc sulphate 7-hydr. 250 g 30249-25 1
Manganese-II chloride,crys. 250 g 31556-25 1
Sodium silicate solution 500 ml 31653-50 1
Spatula, powder, steel, l=150mm 47560-00 1
Wash bottle, 250 ml, plastic 33930-00 1
Beakers, Boro, low form, various sizes 46054-00 1
Protecting glasses, clear glass 39316-00 1
Glass rod, boro 3.3, l=200mm, d=5mm 40485-03 1
Tweezers,straight,blunt, 160 mm 64610-02 1
Water, distilled 5 l 31246-81 1
 
PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com
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