Vocabulary Crossword - Chapter 2

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Across
  1. 4. Light, negatively charged particle found in shells outside of the nucleus.
  2. 7. Heavy particle found in the nucleus of atoms that have no charge.
  3. 8. Substance with a pH less than 7.
  4. 10. Abbreviation for the six elements that make up most of living matter.
  5. 11. Number on the periodic table that indicates the average weight of an element's atoms.
  6. 13. Substance with a pH greater than 7.
  7. 14. Elements that tend to attract electrons within a covalent bond are _____.
  8. 16. Weak bonds between polar molecules such as water.
  9. 20. One or two letter abbreviation for elements on the periodic table.
  10. 22. Bond in which atoms gain or lose electrons and are attracted magnetically.
  11. 23. Matter that cannot be broken down further into simpler substances with unique properties.
  12. 24. Solution that resists changes in pH.
Down
  1. 1. Heavy, positively charged particle found in the nucleus of atoms.
  2. 2. Anything that has mass and takes up space.
  3. 3. Bond in which electrons are unequally shared.
  4. 5. Atoms of two or more different elements bonded together.
  5. 6. Number not found on the periodic table that indicates the number of protons + neutrons in an atom.
  6. 7. Bond in which atoms share electrons equally..
  7. 9. Charged atom that results from a gain or loss of electrons.
  8. 12. The outermost electron shell of an atom that determines how it reacts.
  9. 15. An atom with the mass number twenty-two and the atomic number ten has _____ neutrons.
  10. 17. Specific region of an electron cloud that contains a pair of electrons.
  11. 18. Number on the periodic table that indicates the number of protons in an atom of the element.
  12. 19. An atom with the atomic number eight will have _____ electrons in its valence shell.
  13. 21. Any two atoms bonded together.