Chapter 5 Chemistry Notes

Ionic compounds are compounds whose particles are

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Unformatted text preview: ). The cation is formed from a metal and the anion is formed from 1 or more nonmetals . Ions are charged metal & nonmetal e.g. Na+ Cl- Elements Most elements have single atoms as their constituent particles The atoms may be physically attracted to each other, but are not chemically bonded together A few elements have molecules (two or more atoms bonded together) as their constituent particles. Molecular Elements: H2, N2, O2, F2, Cl2, Br2, I2, P4, S8, Se8, (special case- C60) (Bold italic = memorize) (solid) (solid) Memorize these molecular elements, too! 2 9/10/2013 Molecular Elements Categories of Compounds • Certain elements occur as 2 atom molecules • Other elements occur as polyatomic molecules P4, S8, Se8 , (C60 interesting but uncommon form) Molecular compounds are formed from attached (bonded) nonmetal atoms. Simple ionic compounds are formed from a metal and a nonmetal. The metal atom become a cation by transferring 1 or more electrons to the nonmetal atom, e.g., 2Na...
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