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shms Metals Vocab

vocabulary ch 3 section 3

Metal A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity.
Malleable A term used to describe material that can be pounded into shapes.
Ductile A term used to describe a material that can be pulled out into a long wire.
Conductivity The ability of an object to transfer heat or electricity to another object.
Reactivity The ease and speed with which an element combines, or reacts, with other elements and compounds.
Corrosion The gradual wearing away of a metal element due to a chemical reaction.
Alkali Metal An element in Group 1 of the periodic table.
Alkaline Earth Metal An element in Group 2 of the periodic table.
Transition Metals One of the elements in Groups 3 through 12 of the periodic table.
Alloy A mixture of two or more elements, one of which is a metal.
Particle Accelerator A machine that moves atomic nuclei at higher and higher speeds until they crash into one another, sometimes forming heavier elements.
Synthetic Element Elements with atomic numbers higher than 92are not found naturally on Earth, they are made—or synthesized— when nuclear particles are forced to crash into one another.
Lanthanide In the top row of the two rows below the main periodic table. They are soft, malleable, shiny metals with high conductivity. They are mixed with more common metals to make alloys
Actinide In the bottom row of the two rows below the main periodic table of which only thorium and uranium occur naturally. All elements after uranium in the periodic table were created in labs.
Created by: sciencegirl