Physical Science Unit 6

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Across
  1. 3. The average mass of all the isotopes of an element
  2. 5. A small particle in the nucleus of the atom, with no electrical charge
  3. 6. A positively charged ion
  4. 9. One of the Group B elements in which the highest occupied s sublevel and a nearby d sublevel generally contain electrons
  5. 10. A nonmetal in Group 7A of the periodic table
  6. 11. The basic unit of a chemical element.
  7. 12. Any metal in Group 1A of the periodic table
  8. 14. Sharing of electrons
  9. 16. An atom or group of atoms that has a positive or negative charge.
  10. 17. The sum of the number of neutrons and protons in an atomic nucleus
  11. 18. A row on the periodic table
  12. 20. Metal and metal
  13. 21. Positively charged particle
  14. 23. Atoms of the same element that have different numbers of neutrons
  15. 24. Negatively charged particle
  16. 25. A negatively charged ion
Down
  1. 1. A column on the periodic table
  2. 2. The attractive force that holds atoms or ions together
  3. 4. A combination of chemical symbols and numbers to represent a substance
  4. 7. Electrons on the outermost energy level of an atom
  5. 8. The number of protons in the nucleus of an atom
  6. 11. Any metal in Group 2A of the periodic table
  7. 13. Positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable
  8. 15. Ions that are made of more than one atom
  9. 19. Transfer of electrons
  10. 22. The elements in Group 8A of the periodic table