Chemistry Vocabulary

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Across
  1. 2. States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons
  2. 4. the regions of space in which electrons can move about the nucleus of an atom
  3. 7. basic unit of matter
  4. 8. A process by which an electric current breaks chemical bonds.
  5. 10. A group of atoms bonded together
  6. 11. Atoms of the same element that have different numbers of neutrons
  7. 17. A chemical bond that involves sharing a pair of electrons between atoms in a molecule
  8. 18. when two molecules of the same substances are attracted to one another
  9. 21. subatomic particle with a positive charge
  10. 23. when two molecules of different substances are attracted to one another
  11. 25. the number of protons in the nucleus of an atom of an element
  12. 26. a substance (such as water) that has the ability to dissolve many other substances
  13. 28. A liquid substance capable of dissolving other substances
  14. 29. attraction between a partially positive hydrogen atom of a water molecule and a partially negative oxygen atom of another water molecule
  15. 30. Water's tendency to form an elastic-like sheet or skin
Down
  1. 1. The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds.
  2. 3. A covalent bond in which electrons are not shared equally
  3. 5. A horizontal row of elements in the periodic table
  4. 6. a covalent bond in which the electrons are shared equally by the two atoms
  5. 9. A subatomic particle that has a negative charge
  6. 12. A substance that is dissolved in a solution.
  7. 13. a vertical column of elements in the periodic table
  8. 14. Formed when one or more electrons are transferred from one atom to another
  9. 15. anything that has a mass and takes up space
  10. 16. The amount of energy required to remove an electron from an atom
  11. 19. a pure substance made of only one kind of atom
  12. 20. A positively charged ion
  13. 22. A subatomic particle that has no charge and that is found in the nucleus of an atom
  14. 24. A negatively charged ion
  15. 27. the number of protons and neutrons found in a single atom of a given element