### element | metal:

Lead
* Most lead comes from human activities such as mining, manufacturing and the burning of fossil fuels
  - is used in lead acid batteries, though
  - reaches the ground through gravity and air turbulence
* Some lead conducts electricity
  - has voltage
  - leads enter the heart through a vein, and other leads attach to the outer surface of the heart
* absorbed by the body damages the brain and can cause anti-social behaviour.
* acetate induced morphological transformations in Syrian hamster cells.
* acetate, Made by dissolving lead oxide in vinegar.
* activates protein kinase C in immature rat brain microvessels.
* adversely affects the reproductive systems of both men and women.
* affects all organs and functions of the body to varying degrees
  - both the male and female reproductive systems
  - people's health in the same way, whether they drink, eat, or breathe it
* affects practically all bodily systems
  - systems within the body
* alloyed with tin is the familiar solder used in plumbing and electronic applications.
* are open channels of water that appear when a sheet of ice breaks apart
  - specialized, thin, insulated wires that are attached to the defibrillator
  - wires covered by soft, flexible plastic
* arises largely because water picks up lead from consumers' lead pipes.
* based paint and lead dust is the major cause of lead poisoning
  - becomes dangerous when it starts to deteriorate
* based paint is an issue due to the possibility of children ingesting it
  - the most common lead hazard for preschool children
  - remains the most common source of environmental lead exposure
  - serious hazard for young children
* causes anemia when it combines with red blood cells and bone marrow.
* causes brain damage and mental and physical growth retardation in children
  - damage, learning disabilities and lowers IQs
  - digestive and other health problems
  - toxicity if inhaled
* combines with proteins at sulfhydryl groups.
* commonly reacts with the heavier chalcogens.
* damages the brain, nervous system, and kidneys
  - central nervous system, kidneys and immune system
* decreases intelligence and damages the nervous system.
* distributes itself though the home environment as dust sloughs off painted surfaces.
* enters a child's body mainly through ingestion.
* enters the body by breathing or swallowing lead dust, fume or mist
  - primarily through the mouth or nose
* enters the body through oral ingestion or inhalation of lead dust
  - when it's eaten or breathed
  - drinking water through lead based solder used to join copper pipes
  - human body in many ways
* forms a series of oxides, which are important compounds
  - thin surface layer of oxide in air, which slowly changes to a basic carbonate
  - variety of compounds and exists in the environment in various forms
* gives good resistance against sulphuric acid.
* helps paint last longer and stick better to surfaces.
* includes atoms.
* inhibits aminolevulinic acid dehydratase, necessary for the synthesis of heme from porphyrin
  - nitric oxide production in vitro by murine splenic macrophages
* iodide dense, golden yellow, slightly soluble solid.
* is advantage
  - angles
  - but one example of a contaminant that causes illness through occupational exposure
  - by far the most common contaminant of soils
  - chemical elements
  - evidence
  - graphite
  - heavies
* is heavy elements
  - in any place where lead paint is peeling and creating dust
* is in the blood stream, bones and tissues
  - dust in homes if lead paint was used on the walls, etc
  - leadership
  - metallic elements
  - minerals
  - natural elements
  - news articles
  - of particular concern during pregnancy as the mother can deliver it to the fetus
* is part of card games
  - pencils
  - positions
  - present in all soils at a normal level
  - scores
  - sections
  - strips
  - turns
* occurs naturally as a sulfide in galena.
* occurs naturally in the environment at very low levels
* often attacks the child's developing brain, making it hard to concentrate or do well in school
  - travels with calcium
* piercing the skin surface are prone to infection.
* poses a health hazard when it becomes airborne
  - threat when released into the environment
  - severe health risk to women of child-bearing age
  - an immediate health threat when ingested
* reduces memory, intelligence, concentration and hearing.
* refers to the direction in which a line goes.
* remains in surface waters for about two years, and up to a few hundred years in deep water.
* replaces iron in the absorptive pathway when iron is unavailable.
* severely damages the kidney and liver.
* simply acts as a softening agent, making glass easier to cut and polish.
* sometimes has impurities alloyed with it or coating it.
* stays in the body for different periods of time, depending on where it is
  - very hot long after it has solidified
* stops X-rays because it has a large electron density.
* sulfates form on battery plates during the normal charge-discharge cycles.
* tastes sweet, which is why children start and continue to put it in their mouths.
* tends to have a accumulative effect and quantities can build up over a period of time.
* usually enters the water supply after it leaves the treatment plant.
+ Lead, Uses, As an element: chemical elements :: metals
  * Most lead is used in lead acid batteries, though. The lead is oxidized, making electricity. Sheets of lead are used to block sound in some places. Lead is used in radiation shielding. Molten lead can be used as a coolant in nuclear reactors. It used to be mixed with tin to make the pipes in pipe organs.
  * Lead needs to be expanded.
  * Lead is too short.
  * Lead needs to be expanded to adequately summarise the article.