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Multiple Choice
Classify each solid as amorphous, molecular, network covalent, alloy or ionic. a) Steel ______________________ b) CO2 ______________________ c) Graphite ______________________ d) CaCO3 ______________________ e) Bronze, an alloy of Cu and Sn ______________________
Identify the type of solid for steel: Steel is a mixture of iron and carbon, which makes it an alloy. Alloys are mixtures of two or more elements, where at least one is a metal.
Classify CO2: Solid CO2, also known as dry ice, is composed of molecules held together by intermolecular forces, classifying it as a molecular solid.
Determine the type of solid for graphite: Graphite is composed of carbon atoms bonded in layers with strong covalent bonds within the layers, making it a network covalent solid.
Classify CaCO3: Calcium carbonate is composed of calcium ions and carbonate ions held together by ionic bonds, classifying it as an ionic solid.
Identify the type of solid for bronze: Bronze is an alloy made primarily of copper and tin, which classifies it as an alloy.