Chemistry Unit Study Guide

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Across
  1. 1. no charge
  2. 3. negative charge
  3. 6. shiny,hard,malleable and ductile
  4. 9. created periodic table
  5. 11. compound that are formed when a reaction goes to completion
  6. 12. element whose properties are intermediate between those of metals and solid non-metals
  7. 14. basic unit of a chemical element
  8. 15. states mass in an isolated system is neither created, nor destroyed by chemical reactions of physical transformation
  9. 18. energy absorbed/cold
  10. 20. positive charge
  11. 21. composed of two or more separate elements
  12. 22. atomic weight I'd another name
  13. 24. on periodic table
  14. 25. energy released/hot
Down
  1. 2. substance that is not a metal
  2. 4. known as family
  3. 5. element name on periodic table
  4. 7. electrons in outermost orbital
  5. 8. center of the atom built of protons and neutrons
  6. 10. elements with the same number of electron shells arranged in same row
  7. 13. helium,neon,argon,krypton,Xeon,radon are this.
  8. 16. number of protons in nucleus of atom
  9. 17. regions of space outside the nucleus of atom
  10. 19. groups of atoms bonded together
  11. 23. thin coating of gold, silver, or other metal
  12. 26. substance consumed during the reaction to make products