Which metal oxide imparts black colour in glass?
Probable nickel or chromium oxides.
Flame Tests are confirmatory tests for certain specific elements, most of which are metals. Scientists use these tests because these tests give a perfect idea of the presence of a particular element by the colour of the flame observed. Take for instance an unknown compound is given wherein one is asked to determine the basic radical (the metal; if present). A glass rod is dipped in concentrated HCl and then touched to the salt. The…
You will need to force a drop of super glue into the joint between the metal and the glass in at least two places to tighten the glass doorknob in its metal mounting. If the knob is completely off, you might need to drill a hole in the metal from the back and force the glue in between the metal and the glass.
What container is safe to put dry ice in For example should i put dry ice in a metal bowl glass bowl or does it not matter?
a glass bead is made by taking a rod of glass and a metal rod then melting and winding wrap the rod of glass round the metal rod until you have a disc.then slowly turning it melt the glass into a bead shape[donut]. for more imfomation go to "lampworkglassbeads.com" Other glass beads are made from pressed glass or are cut glass beads, which are then polished.