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Foreman/Stapp - 1

Metals, Nonmetals, Metalloids - 6.6A

Periodic Table of Elements A table in which all the known elements are arranged by properties and are represented by one or two letters, referred to as chemical symbols.
Metals Most elements are metals; they are typically solid, shiny, malleable, and good conductors of heat and electricity.
Nonmetals Elements that are typically not shiny, not malleable, and poor conductors of heat and electricity; usually gases or brittle solids.
Metaloids Elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors.
Luster The way the surface of a mineral reflects light; either metallic or non-metallic such as silky, dull, glassy, or resinous.
Conductivity The ability of a substance to transfer heat or electrical energy.
Malleability The ability of something to be reshaped without breaking.
Brittle A tendency to break rather than flex or bend.
Insulator A material that does not conduct heat or electrical current.
Conductor A substance that readily transfers heat or electrical energy.
Semiconductor A substance that shows the property of electrical conductivity between that of a conductor and that of an insulator; the foundation of modern electronics.
Matter Anything that has mass and takes up space.
Classify/Classification Sort or put into groups based on similar and dissimilar physical, chemical, or biological characteristics.
Element A pure substance composed of the same type of atom throughout.
Physical properties Characteristics that can be observed or measured without changing the substance; for example, color, melting point, or conductivity