Unit 2 Review

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Across
  1. 2. The number of protons each element have
  2. 3. Has a NEGATIVE charge
  3. 5. Protons and Neutrons make up the nucleus an atom and is the center of the atom
  4. 6. Has a NEUTRAL charge
  5. 8. The D-Block elements are metals with typical metallic properties
  6. 11. 14 elements with atomic numbers from 58 - 71
  7. 13. Group 1 elements of the periodic table
  8. 15. an arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same category, or group
  9. 17. Has a POSITIVE charge
  10. 18. The elements of Group 2 of the periodic table
  11. 19. the smallest particle of an element that retains the chemical properties of that element
  12. 20. Total number of protons and neutrons that make up the nucleus of an isotope
Down
  1. 1. Mass is neither created nor destroyed during ordinary chemical reactions or physical changes
  2. 4. The physical and chemical properties of the elements are periodic functions of their atomic numbers
  3. 7. Atoms of the same element that have different masses
  4. 9. These short-range proton-neutron, proton-proton, and neutron-neutron forces hold the nuclear particles together
  5. 10. The P-block elements together with the S-block elements
  6. 12. 14 elements with atomic numbers from 90 - 103
  7. 14. Mass of one mole of a pure substance
  8. 16. The elements of Group 17