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16 Cards in this Set
- Front
- Back
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T/F Metals are made up of closely packed neutral atoms?
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No, Metal are made up of closely packed Cations?
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Metals are made up of closely packed (anion/cations)?
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Cations
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What is a dogion?
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This is for people that don't like cats
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How can the valence electrons of metals be modeled?
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as a sea of electrons.
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What is a metallic bond?
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Metallic bonds consist of the attraction of the free-floating valence electrons for the positively charge metal ions. These bonds are the forces of attraction that hold metals together.
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What are two properties of metals?
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Ductile and Malleable
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What is Ductile?
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The metal can be drawn into wires. It can be formed into a wire shape
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What is malleable?
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The metal can be hammered or forced into shape.
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Why are metals ductile and malleable
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The valence electrons are in a sea of electrons and therefore have lots of mobility
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T/F Metals are crystalline structures that very packed and orderly
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T
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What is an alloy?
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Allows are mixtures composed of two or more elements, at least one of which is a metal.
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What are examples of alloys?
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Brass, Bronze
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Why are alloys important and popular?
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Because their properties are often superior to the individual elements.
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Why is it possible to bend metals but not ion crystals?
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metals behave like a sea of mobile electrons. Crystal solids are brittle and do not bend.
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What are three different packing arrangements found in metallic crystals?
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Body-centered cubic, face-centered cubic and hexagonal close-packet
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Explain why the properties of all steels are not identical
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Steels are different compositions of metals. The size of the atoms also differ. Some may form sustitutional alloys (same size) while others form interstitual alloys (different sizes).
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