Technical data

Osmosis: a "chemical garden"

Article 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 delivery

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