Chemistry Unit Study Guide

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