Chemistry Study Guide

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Across
  1. 6. Have properties that are crossed between metals and non-metals, they can partially conduct electricity which makes good computer chips
  2. 9. When energy is released in the form of heat during a chemical reaction
  3. 10. Something that is mixed together to cause a chemical reaction
  4. 11. Atomic particles found around the nucleus and carry negative charge
  5. 14. Electrons in the outer most orbital
  6. 17. Any gas occupying Group 18 on the Periodic Table
  7. 19. Atomic particles found in the nucleus and carry positive charge
  8. 20. The positively charged center of the atom, extremely dense
  9. 22. How much mass an atom has, how dense it is
  10. 24. Regions of space outside the nucleus of an atom where an electron may exist
Down
  1. 1. 2+ atoms of different elements, not all molecules are compounds but all compounds are molecules
  2. 2. A solid material that is typically hard, shiny, malleable, fusible, and ductile, and are very good conductors of heat and electricity
  3. 3. Mass is neither created nor destroyed in a chemical reaction. Beginning mass = end mass ; atoms are rearranged not destroyed or made
  4. 4. A Russian chemist and inventor; created the Periodic Law and Table of Elements
  5. 5. More than one atom of an element(s) combined to form something larger than the atom
  6. 7. How many protons and electrons an element hass; numbers the element
  7. 8. Something that is created after a chemical reaction
  8. 12. A reaction that occurs in which a layer of metal is bonded to the surface of another substance, which is usually another metal
  9. 13. The smallest part of an element; can not be broken down further
  10. 15. When energy is absorbed and cooled down during a chemical reaction
  11. 16. A natural substance that can not be broken down into simpler substances
  12. 17. Atomic particles found in the nucleus and carry no charge
  13. 18. A column of elements; 18 numbered groups but columns between 2 and 3 are not numbered
  14. 19. Horizontal row on the periodic table; 1-8; similar elements in the same row
  15. 21. Very poor conductor, brittle, can't be made into wire or thin sheets, and some non-metals are liquids
  16. 23. A shortened version of the element name that represents it. Ex: Gold is Au