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Alloy: Quiz


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Question 1: For example, automobile wheels made of an ________ are commonly referred to as simply "alloy wheels", although in point of fact steels and most other metals in practical use are also alloys.
VanadiumTitaniumAluminium alloyScandium

Question 2: For example, 14 karat ________ is an alloy of gold with other elements.

Question 3: For example, impurities in semi-conducting ________ alloys lead to different properties, as first predicted by White, Hogan, Suhl, Tian Abrie and Nakamura.
FerromagnetismMagnetic fieldIronMagnetism

Question 4: This is sometimes due to the sizes of the ________ in the alloy, since larger atoms exert a compressive force on neighboring atoms, and smaller atoms exert a tensile force on their neighbors, helping the alloy resist deformation.

Question 5: ________ is an alloy made from copper and zinc.

Question 6: However, for most alloys there is a particular proportion of constituents (in rare cases two)—the ________ mixture—which gives the alloy a unique melting point.
Eutectic systemGoldMercury (element)Iron

Question 7: Unlike pure metals, most alloys do not have a single melting point, but a melting range in which the material is a mixture of solid and ________ phases.
LiquidPhase transitionSupercritical fluidColloid

Question 8: Similarly, the silver used in jewelry and the ________ used as a structural building material are also alloys.

Question 9: An alloy is a partial or complete solid solution of one or more elements in a ________ matrix.
Noble gasNonmetalHalogenMetal

Question 10: For example, steel is stronger than ________, its primary element.

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