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DO NOW . Objective: ASWDTAT compare the properties of metals and alloys. . What are synthetic polymers used for? . Metals . Usually hard and shiny All are solids at room temperature except mercury Are good conductors of heat and electricity Ductile Malleable . Alloys .
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DO NOW Objective: ASWDTAT compare the properties of metals and alloys. What are synthetic polymers used for?
Metals Usually hard and shiny All are solids at room temperature except mercury Are good conductors of heat and electricity Ductile Malleable
Alloys Mixture made of two or more elements that has the properties of metals At least one of the elements is a metal.
Properties of Alloys Are usually very different than the properties of the elements they are made from. Gold alloy is used for jewelry (pure gold is much more malleable and soft) Alloys are used much more than pure metals because they are generally stronger and are less reactive.
Making and Using Alloys • Many are made by melting metals and mixing them together in carefully measured amounts. • STEEL • Made from an iron base
Other alloys Brass Bronze Stainless steel Carbon steel Sterling silver
Objective: ASWDTAT compare the properties of metals and alloys. What is the difference between a metal and an alloy?