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Electron Dot Diagram

Electron Dot Diagram . Symbol for an element with dots surrounding it. The dots stand for the valence electrons. Chemical Bond . Force of attraction that holds two atoms together . Ion. An atom or a group of atoms that has an electric charge . Polyatomic Ions.

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Electron Dot Diagram

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  1. Electron Dot Diagram Symbol for an element with dots surrounding it. The dots stand for the valence electrons.

  2. Chemical Bond Force of attraction that holds two atoms together

  3. Ion An atom or a group of atoms that has an electric charge

  4. Polyatomic Ions Ions that are made of more than one atom

  5. Ionic Bond Attraction between two oppositely charged ions

  6. Ionic Compound Compound that has positive and negative ions

  7. Chemical Formula Combination of symbols that show the ratio of elements in a compound

  8. Subscript Ratio of elements in a compound

  9. Crystal Ions that form a three dimensional arrangement

  10. Covalent Bond Chemical bond when two atoms share electrons

  11. Molecule Neutral group of atoms joined by covalent bonds

  12. Double Bond When two atoms share two pairs of electrons

  13. Triple Bond When atoms share three pairs of electrons

  14. Polar Bond When electrons are shared unequally

  15. Nonpolar Bond A bond where electrons are shared equally

  16. Valence Electrons Electrons that have the highest energy level and are held loosely

  17. Diatomic Molecule Molecule that consists of two atoms

  18. Chemical Changes Form new substances when bonds break and new bonds form

  19. Precipitate When a solid forms from a liquid.

  20. Endothermic reaction Heat energy is transferred into chemical bonds (matter gets colder)

  21. Exothermic Reaction When the breaking and remaking of bonds releases energy (nearby matter gets hotter)

  22. Chemical Equation Using chemical symbols, + and  to summarize a chem. reaction

  23. Catalyst Substance that speeds up a chemical reaction without being destroyed in the reaction.

  24. Exothermic Reaction When the breaking and remaking of bonds releases energy (nearby matter gets hotter)

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