Alloy Advantage Summary Assessment Part A: On the lines below, define alloy in your own words. Part B: Review the table below. Answer the questions that follow. Description Properties Uses Element (pure substance) Density: 7.8 g/cm3 Make alloys Atomic number 26 Melting 1538 oC Vital to plant and Fourth most abundant Very reactive animal life; carries (Fe) element of Earth’s crust Rapidly corrodes oxygen Hard Iron Brittle Alloy (mixture) Density: 7.9 g/cm3 Bridges Composed of mostly iron, Melting point: 1510 oC Buildings magnesium, silicon and Non-corrosive in most (skyscrapers) Steel carbon environments High strength A709 Non-brittle How do the properties of iron change once an alloy is created? Why a materials engineer recommend the use of steel over pure iron in the design of bridges?
Alloy Advantage Summary Assessment Part A: On the lines below, define alloy in your own words. Part B: Review the table below. Answer the questions that follow. Description Properties Uses Iron (Fe) Element (pure substance) Atomic number 26 Fourth most abundant element of Earth’s crust Density: 7.8 g/cm3 Melting 1538 oC Very reactive Rapidly corrodes Hard Brittle Make alloys Vital to plant and animal life; carries oxygen A709 Steel Alloy (mixture) Composed of mostly iron, magnesium, silicon and carbon Density: 7.9 g/cm3 Melting point: 1510 oC Non-corrosive in most environments High strength Non-brittle Bridges Buildings (skyscrapers) How do the properties of iron change once an alloy is created? Why a materials engineer recommend the use of steel over pure iron in the design of bridges?
mis_alloy_lesson01_summary_assessment_v2_tedl.docx