Chemistry Unit Study Guide

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Across
  1. 4. mix of nonmetals and metals
  2. 5. Columns of elements
  3. 9. Center of an atom
  4. 10. Has neutral charge
  5. 11. states mass can neither be created nor destroyed in a chemical reaction or physical change
  6. 16. reaction that occurs in which a layer of metal is bonded to the surface of another substance
  7. 17. Conductors of electricity, malleable, ductile
  8. 19. a combination of atoms bonded together
  9. 20. Material that cannot be broken down into a more fundamental substance
  10. 22. Chemical reaction that gives off energy
  11. 23. Has negative charge
  12. 25. Has positive charge
Down
  1. 1. Region of space around the nucleus of an atom where an electron is likely to be found
  2. 2. Mass of chemical element
  3. 3. Elements that come out of a reaction
  4. 6. Row of elements
  5. 7. Chemical reaction that absorbs enter
  6. 8. First person to draw periodic table
  7. 9. Element that lacks metallic attributes
  8. 12. Number of protons in atom
  9. 13. Outermost electron
  10. 14. All elements in far right Group
  11. 15. letter(s) that an element is paired with
  12. 18. Basic unit of a chemical element
  13. 21. elements that are put in a reaction
  14. 24. pure substance of two or more different kinds of atoms bonded together