Atomic Vocab (AshlyMC)

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Across
  1. 2. The smallest component of an element
  2. 4. a substance that can't be broken down by non-nuclear reactions
  3. 8. Is the state of lowest energy for that electron
  4. 9. Number of protons and nucleus & can be different for atoms; atom of an element
  5. 10. Quantity of protons in the nucleus of an element
  6. 11. Electron less than neutrons+protons
  7. 14. Combination of protons+electrons
  8. 15. Equal number; protons+electrons
  9. 17. A theory of the structure of the atom
  10. 18. A subatomic particle with zero charge
Down
  1. 1. The electrons in the outermost shell, or energy level, of an atom
  2. 3. All discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number
  3. 5. Forms of the same element with the same number of protons (Atomic numbers) different numbers of neutrons giving different Mass numbers for the isotope.
  4. 6. Made up of one or more atoms
  5. 7. Positively charged center of an atom
  6. 12. An elementary particle with negative charge
  7. 13. Gained more electrons than protons
  8. 16. A stable particle with positive charge