Difference between revisions of "School science experiments"
| Line 1: | Line 1: | ||
=Purple Flame Magic= | =Purple Flame Magic= | ||
| − | ==Materials== | + | ====Materials==== |
5g of pottassium permanganate cystals, 2ml of glycerol, a | 5g of pottassium permanganate cystals, 2ml of glycerol, a | ||
porcelain tile and a dropper. | porcelain tile and a dropper. | ||
| − | ==Procedure== | + | ====Procedure==== |
Pile 5g of powdered KMnO4 crystals on a porcelain tile.Make a small | Pile 5g of powdered KMnO4 crystals on a porcelain tile.Make a small | ||
depression on the centre of the pile. Using a dropper or a glass tube add carefully | depression on the centre of the pile. Using a dropper or a glass tube add carefully | ||
| Line 10: | Line 10: | ||
After a few seconds a white puff of smoke is produced followed by sparks and purple | After a few seconds a white puff of smoke is produced followed by sparks and purple | ||
flame. | flame. | ||
| − | ==Discussion== | + | ====Discussion==== |
This experiment demonsrtates spontaneous combustion. KMnO4 | This experiment demonsrtates spontaneous combustion. KMnO4 | ||
oxidizes glycerol exothermically producing heat and light. | oxidizes glycerol exothermically producing heat and light. | ||
| − | ==Shared by/ Source== | + | ====Shared by/ Source==== |
Praveen Kamath Sir, GHS Ankanahally, Somavarpet Taluk, Kodagu | Praveen Kamath Sir, GHS Ankanahally, Somavarpet Taluk, Kodagu | ||
Revision as of 08:00, 22 August 2014
Purple Flame Magic
Materials
5g of pottassium permanganate cystals, 2ml of glycerol, a porcelain tile and a dropper.
Procedure
Pile 5g of powdered KMnO4 crystals on a porcelain tile.Make a small depression on the centre of the pile. Using a dropper or a glass tube add carefully about 3 to 4 drops of glycerine to the depression. After a few seconds a white puff of smoke is produced followed by sparks and purple flame.
Discussion
This experiment demonsrtates spontaneous combustion. KMnO4 oxidizes glycerol exothermically producing heat and light.
Praveen Kamath Sir, GHS Ankanahally, Somavarpet Taluk, Kodagu
Soap hating and sugar loving match sticks
Materials
Procedure
Discussion
Praveen Kamath Sir, GHS Ankanahally, Somavarpet Taluk, Kodagu
Coin Challenge
Materials
Procedure
Discussion
Praveen Kamath Sir, GHS Ankanahally, Somavarpet Taluk, Kodagu
Magical Wand of Fire
Materials
Procedure
Discussion
Praveen Kamath Sir, GHS Ankanahally, Somavarpet Taluk, Kodagu