Unreactive - PowerPoint PPT Presentation

Elements

Elements. Pgs 54-57. What is an element?. A pure substance than cannot be separated in to simpler substances by physical or chemical means. An Element Has O nly O ne T ype of Particle. A pure substance is one in which there is only one type of particle. Elements are pure substances.

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Nonmetals

Nonmetals. Opposite properties of metals Not shiny Poor conductors Mostly gases (at room temperature) Solids are brittle. Sulfur. Reactivity of Nonmetals. Low. Low. High. Nonmetals will usually gain or share electrons when they react with other elements. Carbon Family. Group 14

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