Lead Andrew S.

Introduction Lead: Is a bluish-white, shiny metal Stains to dull gray when it is exposed to air Is extremely soft Is a poor electricity conductor Is capable of being shaped and molded Is an increasing poison Does not corrode

Discovery: Known to the ancient world at least 7000 years ago Lead Symbol: Pb Atomic Number: 82 Atomic Weight: 207.2 Element Group: Metal Melting Point: 600.65 °K/327.5 °C Boiling Point: 2013 °K/1739.85 °C Discovery: Known to the ancient world at least 7000 years ago Discoverer: Unknown

Effects on Animals Poisoned birds can lose ability to walk or fly, and can experience sever weight loss and eventually die It affects the animal’s central nervous system It stops their ability to produce red blood cells

Effects on The Environment Plants: Lead pollution covers the surface of the leaves making it less available to the light The plant eventually dies because of the lack of light and the reduced rate of photosynthesis Micro-organisms: Lead can wipe out millions of bacteria and fungi on leaves and in the soil

Sound and Vibration Absorber Uses of Lead Lead is used for: X Radiation shields Sound and Vibration Absorber Batteries

Interesting Facts Lead dust is invisible and it is so tiny that it passes through masks and filters Lead poisoning causes learning and developmental disabilities Children who look healthy can have high amounts of lead in their blood

Works Cited Anne, Marie Helmenstine. “Lead.” Chemical & Physical Properties. 22 April 2010 <http://chemistry.about.com/od/elementfacts/a/lead.htm> Greene, Demi. “Effects of lead on the environment.” LEAD Action News. 25 April 2010 <http://www.lead.org.au/lanv1n2/lanv1n2-8.html> “Lead Facts.” Substance Fact Sheets. 25 April 2010 <http://www.dhss.mo.gov/hsees/lead.html> “Lead Facts.” The Basics About Lead Paint. 25 April 2010 <http://www.leadpro.com/facts/html> “Lead Fishing.” Anglers and Aquatic Resource Protection. 25 April 2010 <http://www.epa.gov/owow/fish/animals.html>