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Physical 2.1

Unit 2 Chap 1 Metals

QuestionAnswer
The gradual wearing away of a metal as a result of a chemical reaction in which the metal is changed into a metallic compound: corrosion
A substance's ability to be drawn into the form of a wire: ductility
A substance's ability to be flattened into thin sheets by hammering: malleability
The type of bond in which the metal atoms are surrounded by a sea of electrons: metallic bond
The type of bond in which atoms share electrons: covalent bond
The bond in which an atom gains the electrons from an oppositely charged ion: ionic bond
A naturally occurring rock from which a useful metal or mineral is recovered: ore
The process of converting an ore into a free, uncombined metal: reduction
The elements in group IA on the periodic table, except for hydrogen: alkali metal
The elements in group IIA on the periodic table: alkaline-earth metal
The elements in groups IIIB through IIB on the periodic table: transition metal
These are malleable, ductile, and good conductors of electricity and heat: metals
These are brittle, poor conductors, and not malleable or ductile: nonmetals
These are semiconductors: metalloids
Two elements in the earth's crust that combine with metals to create the majority of the ores are: oxygen and ________________. silicon
Metal ores are considered a ______________ resource. nonrenewable
3 types of reduction are: heating with air, heating with carbon, and ________________________. electrolysis
Alkaline-earth metals are __________________ reactive than alkali metals. less
What is released when alkali metals react with water? hydrogen
This is the number of valence electrons that alkali metals have: one
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