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Chapter 6 Vocabulary
Term | Definition |
---|---|
Electron dot diagram | A model of an atom in which each dot represents a valence electron. |
Ion | An atom that has a net positive or negative electric charge. |
Anion | An ion with a negative charge. |
Cation | An ion with a positive charge. |
Chemical bond | The force that holds atoms or ions together as a unit. |
Ionic bond | The force that holds cations and anions together. |
Chemical formula | A notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound. |
Crystals | Solids whose particles are arranged in a lattice structure. |
Covalent bond | A chemical bond in which two atoms share a pair of valence electrons. |
Molecule | A neutral group of atoms that are joined together by one or more covalent bonds. |
Polar covalent bond | A covalent bond in which electrons are not shared equally. |
Polyatomic ion | A covalent bonded group of atoms that has a positive or negative charge and acts as a unit. |
Metallic bond | The attraction between a metal cation and the shared electrons that surround it. |
Alloy | A mixture of two or more elements, at least one of which is a metal. |