In 1890, the first case of lead poisoning was discovered in Australia. However the source of the lead was not traced to the paint on the verandahs and railings until 1904. In the United States the first recorded case of lead poisoning occurred in 1914 when a little baby ate the paint chips from his crib; this characteristic of children to taste everything the touch is referred to as pica. Lead is an extremely common metal that can be found almost anywhere. Some common sources of lead include: water, paint, electric storage batteries, insecticides, auto body shops, gasoline, etc. Even though there have been steps taken against lead with the Lead-Based Paint Poisoning Prevention Act, lead is still a public health risk today. What does lead do exactly that is so harmful to the human body? More specifically how does lead effect the nervous system?
Most of the dysfunctions produced by the absorption of lead are due to lead's ability to mimic and inhibit the actions of calcium. In humans the lead is directly absorbed, distributed, and excreted. Once in the bloodstream lead is distributed to three main compartments: blood, soft tissue (kidney, bone marrow, liver, and brain), and mineralized tissue (bones and teeth). Lead effects children and adults in different ways. Low lead levels in children can cause the following side effects:
In adults high levels of lead in their systems can cause the following:
isotopes
Lead Dioxide or Lead IV Oxide
Lead cannot be turned into gold. Lead can only be turned into more lead, and more lead can only be turned into even more lead. Lead cannot be magically turned into gold.
Plumbous phosphate, or lead(II) phosphate.
lead + oxygen = lead oxide.
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isotopes
there is no lead in lead pencil.
Lead and oxygen are the elements in lead dioxide.
The term "to lead" is the infinitive form of the verb "lead." It can be a noun, adjective, or adverb. However, if "to" is used as a preposition, and "lead" to be the element lead, then "to lead" as in "the element was turned to lead" is an adverbial phrase.
A homophone for "lid" is "lidded."
Pencil lead isn't really lead, it is graphite, a form of carbon. Pencil lead doesn't have any lead in it whatsoever.
Lead is an element, it is not made of anything but lead. But if you are talking about pencil lead then pencil lead is made of graphite.
Pb[OH]2 for white lead, Pb3O4 red lead
Lead Dioxide or Lead IV Oxide
Lead sulphide (lead sulfide) contains only two elements, lead and sulfur. Lead sulfate contains lead, sulfur and oxygen.
Lead cannot be turned into gold. Lead can only be turned into more lead, and more lead can only be turned into even more lead. Lead cannot be magically turned into gold.