Given the EÂ° values for two half reactions, you can easily predict the potential difference of the corresponding cell: simply add the reduction potential of the reduction half-cell to the negative of the reduction potential (that is, to the oxidation potential) of the oxidation reaction.
How to Melt Glass With a Torch. Glass melting has a long history, going back to approximately 3000 BC. In these early times, glass was melted to decorate vases. Glass is made up of silica, sodium carbonate and calcium carbonate. Most glass melts at 1400 to 1600 degrees Farenheit. Nevertheless, there are specialized glasses that will melt at as low as 900 degrees.
The glass transition is the transition of amorphous solids from a hard and brittle state into a molten or rubber-like state. An amorphous solid that goes through a glass transition is called a glass. Supercooling a viscous liquid into the glass state is called vitrification. The glass transition temperature Tg is always lower than the melting temperature, Tm, of the crystalline state of the material, if one exists. Above a glass transition temperature, a plastic is rubbery. Below the glass transition temperature, a plastic is solid.