Hello guys, Welcome to Africa's Largest Video Search Engine, and you are watching Growing a metal hedgehog from a piece of zinc ("Tin hedgehog" experiment). and this video is uploaded by MEL Science at 2018-02-27T10:32:56-08:00. We are just promoting this video only for entertainment and educational purpose only. I hop you like our Video Search Engine. [oanGV4uj3VI]
| Name | Growing a metal hedgehog from a piece of zinc ("Tin hedgehog" experiment) |
| Video Uploader | Video From MEL Science |
| Upload Date | This Video Uploaded At 27-02-2018 18:32:56 |
| Video Discription | A similar experiment is included in the MEL Chemistry subscription. For cool and safe experiments sign up to MEL Science here: https://goo.gl/4E8dVW Safety precautions Wear protective gloves, a mask and gloves and work in a well-ventilated room. Observe safety rules when working with concentrated acids. Reagents and equipment: * piece of zinc; * 5% tin(II) chloride solution; * 70% acetic acid; * distilled water; * 2 beakers. Step-by-step instructions Into a beaker, pour 5 g of tin(II) chloride, and dissolve it in 95 g of distilled water. Observe the solution turn cloudy. Add a few drops of acetic acid – the solution turns transparent. Hang the piece of zinc on a splint or pencil and immerse it in the solution. After 4 minutes the zinc becomes covered with “spiky” crystals. Processes description When tin(II) chloride is dissolved, its hydrolysis takes place, and a sediment of tin(II) hydroxide forms, which is insoluble in water. To reverse the hydrolysis and obtain tin(II) ions we add a few drops of 70% acetic acid. In the reactivity series of metals, zinc is to the left of tin, and so it easily forces tin out off solutions of its salts. An oxidation-reduction reaction takes place, and the tin is reduced on the surface of the zinc in the form of beautiful spiky crystals. SnCl₂ + Zn → Sn + ZnCl₂ [oanGV4uj3VI] |
| Category | Science & Technology |
| Tags | MEL Science | MEL Chemistry | experiment | fun science experiments | cool science projects | chemistry lab | cool experiments | chemistry help | easy science experiments for kids | science experiments at home | fun experiments | cool chemical reactions | experiments to do at home | easy experiments | at home science experiments | amazing experiment | tin hedgehog |
