chemistry unit study guide

12345678910111213141516171819202122232425
Across
  1. 1. a thing that is composed of 2 or more elements
  2. 6. The same number as protons and Neutrons
  3. 7. The coloms on the periodic table
  4. 8. a thin coating of metal
  5. 9. a reaction acomponied by the relese of heat
  6. 10. a part of an atom with a neutral charge
  7. 11. a reaction acomponied by the absorbtion of heat
  8. 14. electrons on the outermost orbital
  9. 18. smallest unit of any form of matter
  10. 21. rings around the necleus that electrons move on
  11. 22. Russion chemist who created the periodic table
  12. 25. a mererial normaly hard, shiny, malleable, and ductile
Down
  1. 2. an element whose properties are intermediate between metals and solid nonmetals
  2. 3. any gaseous element in group 18 of the periodic table
  3. 4. mass is not created or destroyed in a chemical reaction
  4. 5. innermost part of an atom that contains protons and neutrons
  5. 12. an element or substence that is not a metal
  6. 13. positively charged part of an atom
  7. 15. Negatively charged part of an atom
  8. 16. An abriviation on an elements name
  9. 17. the rows on the periodic table
  10. 19. the things that are created in a chemical reaction
  11. 20. a substence that takes part in a chemical reaction
  12. 23. a group of elements that are bonded
  13. 24. cannot be broken down or chemically intercinverted