Melting sulphur, 1 of 4. A test tube with powdered sulphur, S, is placed over a Bunsen burner flame. When heated, it first melts to a straw-yellow liquid and then darkens to a red-brown colour. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Giphotostock |
Bildgröße: | 5150 px × 3424 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |