Atomic Structure Vocabulary

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Across
  1. 1. Smallest unit into which matter can be divided without the release of eletrically charged particales.
  2. 2. In chemistry a column in the periodic table of the chemical elements.
  3. 7. A chemical element that exhibits some metal and non-metal properties.
  4. 8. A substance particale with a mass of 1 and charge of 0.
  5. 10. The electrons in the outermost shell, or energy level of an atom.
  6. 13. A structural model of an atom.
Down
  1. 1. The number of protons found in a nucleus of an atom, Which uniquely identifies its element.
  2. 3. Table The organized array of all the chemical elements in order of increasing atomic number.
  3. 4. Members of a family of an element that all have the same number of protons but different numbers of neutrons.
  4. 5. A stable negatively charged componet of an atom.
  5. 6. The combined mass of all the protons,neutrons, and electrons that make up an atom
  6. 9. A column of elements on the periodic table. Each member of a family has the same number of valence electrons.
  7. 11. Any substance that can not be decomposed into simpler substances by ordinary chemical process.
  8. 12. A positively charged particale that resides within the atomic nucleus.