what is leaded glass?
463185
Yeah, I'd've said like Stained Glass.  Or those windows made up of lots of very small square or diamond panes connected together using strips of lead.
56527
Believe it or not, glass is actually considered a liquid.  But, it flows very very very slowly over time.  That is why, eventually, windows and mirrors are a bit thicker at the bottom than at the top.
700153
Measure the increase in lead content of different drinks, especially fruit juices, when poured into lead crystal.\n\nHow does the content increase the longer the juice stays in the glass?
415462
Several lead alloys are widely used. Solder, an alloy that is nearly half lead and half tin, is a material with a relatively low melting point that is used to join electrical components, pipes and other metallic items. Type metal, an alloy of lead, tin and antimony, is a material used to make the type used in printing presses and plates. Babbit metal, another lead alloy, is used to reduce friction in bearings.
800658
All lead water mains have been replaced in the UK now.\n\nHowever, you are responsible for the pipe from the main (or from the boundary of your property) to your home, and if your home is over about 80 years old then this pipe will almost certainly be lead unless you have replaced it. Piping in the house may also be lead.\n\nMost water authorities operate a free led replacement service. How this works is that you replace all of the lead pipe in your home and install a new MDPE pipe around 6 feet underground to connect to the mains. They inspect this and then replace your connection to the main free.\n\nLead in pipes is most definitely harmful, but the risk is minor, especially if the only lead is in the main pipe. Run the water for a few seconds in the morning to flush out any that has been standing in the pipe if you know it is definitely a lead pipe.\n\nThe chlorine in water is completely harmless.\n\nMost home filters are of very little value. They do not remove heavy metals (you need an ion exchange resin or chelate for that) and usually cannot remove chlorine. However, because they require you to leave water standing for a long time the amount of chlorine will reduce naturally (it is almost all gone if left say overnight). They mainly remove particles.\n\nBottled water is a matter of choice. However, it is definitely not as safe as tap water in terms of infection because it does not contain chlorine and so it should never, ever, ever be given to people with weak immune systems such as very young babies. Bacteria always grows in bottled water, even with the seal unbroken.
213161
SiO2 (like standard glass) and it can be tainted with other materials depending on prospective use.
816237
I do not think that atoms will fly over the gap between a piece of gold and and old lead pipe.\n\nHowever, gold and lead readily form a wide range of alloy compositions. Lead has a high affinity for gold and can be used as a collector for gold in pyrometallurgical processes. The lead can be subsequently separated by volatilization.
396821
high velocity copper covered lead
672330
Glass is made from silica and sand, heated at very high temperatures.  Different colors come from adding different metals and other elements.
29825
I visited Corning Glass at Elmira, NY, home of Steuben Glass.  I believe I learned there (or read it?) that it is easier to make glass by adding sand to molten glass to dissolve the sand than to melt raw sand.  For that reason recycling used glass bottles etc, actually helps the glass industry.  Of course there are many types of glass.  For example, I believe that leaded glass can contain perhaps 40% lead and is crystal clear and easier to etch or cut.  Most common glass is soda glass and can dissolve in water over time.  Antique bottles found in old household dumps are often pitted from groundwater.
176877
We don't know who found lead but it was used by Romans. They used lead in their plumbing systems. Latin for the word lead is Plumbum. That is why the symbol for lead is Pb. (By the way, plumbing is a Latin originated word.) But later on, the fact that carrying water in lead pipes can cause lead poisoning was established, and lead pipes got banned.\n\nCommon uses today:\n"Used in lead batteries, gasoline additives (now being eliminated) and tanks, and solders, seals or bearing; used in electrical and electronic applications; TV tubes and glass, construction, communications and protective coatings; in ballast or weights; ceramics or crystal glass; X-ray and gamma radiation shielding; soundproofing material in construction industry; and ammunition. United States is largest producer (mainly from Missouri) and consumer of lead metal." (National Mining Association.)
883128
Use a magnet. Iron is attracted to it, lead is not.
790585
Leaded and unleaded gasoline, not oil. Before technology got around to major improvements in fuel and metallurgy lead was added to gasoline to coat the valves of an internal combustion engine to prevent pitting and lengthen the life of the engine or the duration between rebuilds. Lead usage in fuel was made illegal in the US because of the poisoness effects of breathing air with leaded emission fumes and of the cumulative effects of the leaded soot that collected near streets and highways. Now valves are made of harder, more durable metals and fuels burn cooler and have newer, less toxic additive to prevent pitting and "ping"
817375
lead acetate test is used for detection of iodide ion. \nso, let the sample salt be ferric iodide.This ferric iodide doesn't react easily with lead acetate . sample is boiled first in 50% NaOH solution as lead acetate reacts with NaOH to form NaI, which reacts easily  with lead acetate to form lead iodide(yellow ppt.)
400601
Number 2 pencils don't have any lead, but there are probably still some pencils manufactured that do contain lead.  They're just not very popular because of the possibility of poisoning.
1143034
It was actually manganese and not magnesium that was used in antique glassware.  A combination of manganese and UV rays results in the color change that is now too often seen in many antique pieces. \n\nAround 1860, most American glass companies used manganese in their glass formulas.  By 1915, most companies had stopped using manganese and replaced it with selenium.
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The Roman naturalist, Pliny, used the name galena to describe lead ore.\n\nhttp://webmineral.com/data/Galena.shtml