Unit 3 Vocab-Braeden Penrose

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Across
  1. 2. A chemical substance that is present at the END of a chemical reaction. The result.
  2. 5. a compound that produces hydroxide (OH-) ions in solution, ph > 7.
  3. 10. A covalent bond in which electrons are not shared equally.
  4. 11. A material that does NOT allow heat or electrons to move through it easily.
  5. 13. An element that has properties of both metals and nonmetals.
  6. 15. any compound that forms hydrogen ions (H+) in solution, pH < 7.
  7. 19. A bond between two ions of opposite charges.
  8. 21. A bond in which two atoms share valence electrons.
  9. 23. States that mass cannot be created or destroyed in ordinary chemical and physical changes. It simply changes form or structure.
  10. 24. An ion with a positive charge.
  11. 25. Elements in group 18 of the periodic table. Have no charge, do not bond with other atoms, and are gases under normal conditions.
Down
  1. 1. Neutral group of atoms that are joined together by one or more covalent bonds.
  2. 3. A chemical substance that is present at the START of a chemical reaction. The "ingredients".
  3. 4. A material that allows heat and electricity to pass through it.
  4. 6. Elements characterized by physical properties that include shininess, malleability, ductility, and conductivity.
  5. 7. A covalently bonded group of atoms that has a positive or negative charge and acts as a unit.
  6. 8. An ion with a negative charge.
  7. 9. The force or attraction that holds atoms or ions together.
  8. 12. A mixture of two or more elements at least one of which is a metal that has the characteristic properties of a metal.
  9. 14. A notation that shows what elements a compound contains and the ratio of atoms or ions of those elements in a compound.
  10. 16. The attraction between a metal cation and the shared electrons that surround it.
  11. 17. A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products.
  12. 18. Elements that are poor conductors of heat and electric current.
  13. 20. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
  14. 22. An atom that has a net positive or net negative charge.