1. LEAD 1.Properties 2.How is lead obtained? 3.Alloys 4.Uses

2. PROPERTIES - Its characteristics are high density, softness, ductility and malleability, poor electrical conductivity compared to other metals and high resistance to corrosion - Lead is a bright, toxic and silvery metal - The addition of small amounts of copper increases the alloy's hardness and corrosion resistance from sulfuric acid.

3. How is the metal obtained? - The raw material from which lead metal is produced is a naturally ore or, more normal today, lead products returned for recycling. -In the case of a naturally of lead, the first step is usually to separate it from other metallic ores. -About 4 million tons are produced from recycled scrap -Lead is obtained from galena. It is extracted by heating, by adding carbon to a blast furnace

4. alloys - Molybdochalkos is an alloy of copper and lead. -Solder is an alloy of lead and tin used to join together metal workpieces. -Terne is an alloy of lead and tin is used to cover steel.

5. USES Today, the uses of lead are in ammunition, oxides in glass and ceramics, casting metals, and sheet lead. -Before they use the lead in ammunition, burial vault liners, ceramic glazes, leaded glass and crystal, paints or other protective coatings, pewter, and water lines and pipes but now we don’t use it in water lines and pipes because it is toxic.

6. Questions -Is lead toxic for humans? Yes it is -In which mineral can we find lead? In galena -Is solder an alloy of lead and steel? No it isn’t. Solder is an alloy of lead and tin -Do we use lead in water lines and pipes in today´s society? No because it is toxic

7. MADE BY: -CARLOS -ISAAC -MONICA -AZUL -LORENA

8. The end

9. pages http://science.jrank.org/pages/3863/Lead-How-metal- obtained.html http://science.jrank.org/pages/3863/Lead-How-metal- obtained.html Http://en.wikipedia.org/wiki/Lead http://en.wikipedia.org/wiki/List_of_alloys#Alloys_of _lead http://en.wikipedia.org/wiki/List_of_alloys#Alloys_of _lead