A chemical kraken arises right before your eyes!
Warning! Only under adult supervision.
- large beaker with an acidic solution of tin(II) chloride;
- two pieces of copper wire;
- steel plate;
- piece of tin;
- power supply.
Fix a copper wire over a large beaker with an acidified tin(II) chloride solution. Hang a steel plate on it so that the plate is touching the solution. Immerse another piece of copper wire and a piece of tin in the solution so that they are touching one another. Connect a power supply to both pieces of copper wire – large tin "tentacles" will grow in just a few minutes!
The acidified solution of tin(II) chloride conducts electric current. Under its influence, tin ions are converted into metallic tin, the atoms of which bond to each other in a special way. This forms dendritic crystals that resemble the tentacles of a kraken!
A similar experiment is included in the “Tin” set from the MEL Chemistry subscription!