Chemistry Study Guide

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Across
  1. 3. regions of space outside the nucleus of an atom where an electron may exist (rings)
  2. 4. smallest part of an element and cannot be broken down any further
  3. 5. abbreviation of an element
  4. 6. new substances formed from a chemical reaction
  5. 8. positively charged center of an atom (high density)
  6. 9. same number of protons and electrons
  7. 10. created Periodic Table
  8. 11. energy is released (warmer)
  9. 12. energy is absorbed (cooler)
  10. 13. row of elements (7) (horizontal)
  11. 14. shiny, good conductors of heat & electricity, solid
  12. 15. element with low chemical reactivity, odorless, colorless
  13. 17. column of elements (18) (vertical)
  14. 18. atomic particles that move around the nucleus of an atom and carry a positive charge
  15. 20. amount of matter in an atomic particle
  16. 21. a reaction that occurs in which a layer of metal is bonded to the surface of another metal
  17. 22. of Conservation of Mass matter, mixtures, pure substances can be changed, but the mass stays the same
Down
  1. 1. combination of two or more elements
  2. 2. chemical compound made up of different atoms bonded by chemical relationships
  3. 7. electrons in outermost orbital
  4. 11. substance that cannot be broken down into simpler substances
  5. 15. atomic particles found in nucleus of atom, carry no electric charge
  6. 16. cross of metals and no metals, can partially conduct electricity
  7. 19. aren't malleable or ductile, poor conductors of heat and electricity
  8. 21. atomic particles found in nucleus of atom, carry positive charge