Chemistry Regents CODE Vocabulary

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Across
  1. 4. a change in the properties of elements as you move around the periodic table
  2. 7. negatively charged and found in orbitals around the atom
  3. 11. neutrally charged and found in the nucleus
  4. 13. created the most widely-seen model of the atom, looks like a solar system
  5. 15. an atom with an excess number of neutrons, changes chemical properties
  6. 16. first scientist in ancient Greece who theorized the existence of atoms
  7. 18. a horizontal row of elements on the periodic table that show trends as you move from left to right
  8. 19. a group of multiple elements bonded together
  9. 20. most are solid and have shiny appearance, conduct electricity well, found on left side of periodic table
Down
  1. 1. had the plum pudding model of the atom
  2. 2. may be liquid or gas, found on the right side of the periodic table
  3. 3. the smallest unit of matter made of protons, neutrons, and electrons
  4. 5. an atom with specific chemical qualities
  5. 6. a group of multiple organic/nonmetallic elements bonded together, found in living things
  6. 8. the grouping of elements based on their chemical properties based on the work of Mendeleev and other scientists
  7. 9. a vertical column of elements on the periodic table with similar chemical properties
  8. 10. path of electrons around the nucleus of an atom
  9. 12. a charged atom or compound
  10. 14. discovered the atom is mostly empty space
  11. 17. some properties of metals but are dull in appearance and weak conductors of electricity, found along stair-step on periodic table
  12. 18. positively charged and found in the nucleus