Properties and the Periodic Table

1234567891011121314151617181920
Across
  1. 1. the positively charged particles in the nucleus of an atom
  2. 4. the number of protons in the nucleus of one atom of the element
  3. 7. a chart that organizes elements by their properties
  4. 8. a column in the periodic table
  5. 9. the negatively charged particles that circle the nucleus of an atom
  6. 10. the ways an element behaves with other elements
  7. 12. the center part of an atom, which contains protons and neutrons
  8. 13. change chemically
  9. 14. giving off high-energy particles
  10. 16. imaginary paths around the nucleus of an atom in which electrons move
  11. 17. balanced and not easy to change
  12. 20. having qualities that set one thing apart from others
Down
  1. 1. the characteristics of a substance you can observe without changing the substance
  2. 2. people who find new ways to use elements and compounds
  3. 3. the smallest part of an element that has the properties of that element
  4. 5. events that happen over and over
  5. 6. a row in the periodic table
  6. 10. a change in matter that results in the formation of a new substance
  7. 11. an abbreviation for an element, usually made of one or two letters from the beginning of its name
  8. 15. a substance that cannot be split into simpler substances
  9. 18. materials that allow heat and electricity to pass through
  10. 19. any substance from which something can be made
  11. 20. the mass per unit volume of a substance