Chemical Bonding 1

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Last updated 9:43 PM on 7/2/26
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8 Terms

1
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Covalent bond

Formed when two atoms share their valence electrons.

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Molecule

Contains atoms connected by covalent bonds. Examples: H2O, CO2, glucose (C6H12O6)

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Nonmetal + Nonmetal

This pair forms a covalent compound. For example, in Cl2, two nonmetal atoms (Cl) share a pair of valence electrons to form a covalent bond.

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Dot-and-cross diagram for H2O

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Dot-and-cross diagram for CO2

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Ionic bond

Formed when a cation (+) is attracted to an anion (-).

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Ionic compound

Contains ions connected by ionic bonds. Examples: NaCl, CaCO3

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Metal + Nonmetal

This pair forms an ionic compound. For example, in NaCl, the metal (Na) loses electrons to form a cation (Na+) while the nonmetal (Cl) gains electrons to form an anion (Cl-). The ions (Na+ and Cl-) are then connected by ionic bonds.