Periodic Table Vocabulary

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Across
  1. 2. the basic building block of chemistry
  2. 3. explains the nature and behavior of matter and energy on the atomic and subatomic level
  3. 4. two things mixed together to make something else
  4. 5. beryllium, magnesium, calcium, strontium, barium, and radium
  5. 7. not able to decay dur to radioactivity
  6. 9. A gaseous chemical element that does not readily enter into chemical combination with other elements
  7. 11. the total number of protons and neutrons in an atom
  8. 15. a chemical species which holds a positive or negative charge of some magnitud
  9. 17. the electrons in an atom's outermost electron shell
  10. 19. the minimum charge possible
  11. 22. The horizontal rows of the periodic table
  12. 23. the act of emitting radiation spontaneously
  13. 26. a chemical element that forms a salt when it reacts with metal
Down
  1. 1. one of the three subatomic particles that make up an atom
  2. 2. any of the elements found in Group IA of the periodic table
  3. 6. steel,iron,copper
  4. 8. something repeats after fixed interval
  5. 9. consists of electrically positive protons and electrically neutral neutrons
  6. 10. equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom
  7. 11. a chemical element that exhibits some metal and some nonmetal properties
  8. 12. wool,coal,wood
  9. 13. fixed distances from the nucleus of an atom where electrons may be found
  10. 14. a variation of an element that possesses the same atomic number but a different mass number
  11. 16. 1/12 the mass of a carbon-12 atom
  12. 18. the physical property of matter that causes it to experience a force when placed in an electromagnetic field
  13. 20. the table of elements
  14. 21. substance made up of different elements joined together by a chemical bond
  15. 22. a subatomic particle with a positive electrical charge
  16. 24. a substance whose atoms all have the same number of protons
  17. 25. A group of electrons circulating around a nucleus or a molecule
  18. 27. a number of things put together