lead-iron

Lead is an element with the symbol Pb. It is a soft malleable metal. It is used in construction building, bullets and batteries. We use it because it is very malleable and because of that it has a high resistance to corrosion. It always has been easy to smelt.
 * Background**

Some product we use it in is bullets and batteries but also because of it’s ability to withstand corrosion it used to store sulfuric acid. In Ancient Roman times it was used in water pipes and even some are still in use today.

Lead has a high resistance to corrosion meaning it can save up a lot of things like that why it is used t store sulfuric acid and is used in batteries and bullets. But other than a good metal lead is also very poisonous. It is used in almost every country that uses common goods.

Lead has a big impact on our health. Lead in fact is poisonous and can cause severe nervous system damage especially in young children. Long-term exposure to lead can cause nephropathy, damage to his kidney. Lead exposure has also been linked to learning disabilities. Lead also inhibits ferrochelase which causes Erythropoietic protoporphyria, an enzye disorder that’s causes pains to this skin. It also interferes with ion channels during nerve conduction.
 * Health and Environment**

Environmental

Specific systems with which it reacts-It can get into water and soil. If it does it will last a very long time and if consumed it can lead to poisoning.

3 CHemical reactions PbO + PbS → 3 Pb + SO2 forms metal

3 Pb + 8 H+ + 8 NO3– → 3 Pb2+ + 6 NO3– + 2 NO + 4H2O Disolves it

bO2 + 2 OH– + 2 H2O → Pb(OH)62– Lead oxide

What happens when it degrades

Lead doesn't really degrade. The pure metal may corrode to form lead oxide or other lead salts, but the lead atoms still remain, and they can still cause problems like lead poisoning

How long does it take It only oxidises

How is it disposed of

Lead Should be wrapped in two layers of six mil poly and sealed with duct tape and sent to the dump where they have it stored.

1-Lead has been banned in gasoline food cans and paint, Thanks to this lead has dropped 85% in the last 20 years and 93% in adults. Since lead is still around old houses it may still be a problem since there is still lead based paint in some areas.
 * Synthesis/Production & Economic/Political**

2-Most alternatives to lead are costy. since making things similar to lead is hard it costs a lot of money to make alternatives for lead.

3-Lead is used as a coloring element in ceramic glazes, notably in the colors red and yellow. -Lead is used as projectiles for firearms and fishing sinkers. -Lead is used in some candles to treat the wick to ensure a longer, more -even burn. -Lead is used as shielding from radiation. -Lead glass is composed of 12-28% lead. -Lead is the traditional base metal of organ pipes, mixed with varying amounts of tin to control the tone of the pipe. -Lead is used as electrodes in the process of electrolysis. -Lead is used in solder for electronics. -Lead is used in high voltage power cables as sheathing material to prevent water diffusion into insulation. -Lead is used for the ballast keel of sailboats. -Lead is added to brass to reduce machine tool wear. -Lead sheets are used as roofing material. -Lead is frequently used in scuba diving weight belts. It is also used in weights used in angling.

4-China exports the most lead products in the world, There are more then 23.2 million units of lead exported a year.

5-If lead was banned I would Not be able to use almost all of the products in my house. I would not be able to change the channel on my tv, Play my videogames, Or even brush my teeth since I have an electric toothbrush

6-If it was banned in a country there will be national chaos. Soliders would have no ammo for there guns. People would not be able to use anything with a battery. Pipes would erode. Society would have a huge problem without lead.

Lead is a natural made metal of the earth and it is easy to extract. But it is rare in its metallic form. Lead is usually found in ore with zinc, silver and copper. The main lead mineral is galena, which contains 86.6% lead. But most ores contain less then 10% of lead. Ores are crushed and concentrated by froth flotation typically to 70% or more.

Lead use to be found in paints, cans, and pipes and are still in bullets and battery acids. Lead in paints was a good idea because it dried faster, increased durability and resisted moisture which caused corrosion but it was banned due to health implications.

For White paint: Pb + CO3--> PbCO3 Lead carbonate For Yellow Pb + CrO4-->PbCrO3 Lead chromate

Lead(Pb) is a heavy metal and its just an element and is not made up of anything else unless it is found in other metals such as zinc or copper.


 * Abstract:** Lead is an element with the symbol Pb. It is a soft malleable metal. It is used in construction building, bullets and batteries. We use it because it is very malleable and because of that it has a high resistance to corrosion. Because of its ability to withstand corrosion it is also used to store sulfuric acid. But other than a good metal lead is also very poisonous. It is used in almost every country that uses these common goods.

Lead has a big impact on our health. Lead in fact is poisonous and can cause severe nervous system damage especially in young children. Long-term exposure to lead can cause nephropathy, damage to his kidney. Lead exposure has also been linked to learning disabilities. In our environment, Lead does not degrade because of its high resistance to corrosion but lead does mix with other things in the environment and when consumed could lead to lead poisoning.

3 CHemical reactions PbO + PbS → 3 Pb + SO2 forms metal

3 Pb + 8 H+ + 8 NO3– → 3 Pb2+ + 6 NO3– + 2 NO + 4H2O Disolves it

bO2 + 2 OH– + 2 H2O → Pb(OH)62– Lead oxide

I feel as though lead is a good metal and helps us with life but I feel as though lead should be only used for certain things. Alternatives aren’t really necessary and are usually too costly. The thing we HAVE to do is eliminate any remaining lead from houses and drinking water because lead even in small amounts can cause an IQ drop of 4. So even bigger amounts could probably cause unbelievable damage.

We have many benefits from lead and since people use it cheaply in there everyday lives we have to notice that alternatives are not a factor even though lead affects our health. Alternatives would be too costly so we should stick to using lead but we should work quickly on getting lead out of our water supply and our houses for these could be dangerous to people especially children.

http://www.teachertube.com/view_video.php?viewkey=28db11aa97b12df8fdc1