Atoms

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Across
  1. 2. A subatomic particle with a positive charge found in the nucleus.
  2. 5. The smallest unit of an element that maintains the properties of that element.
  3. 6. A change where substances transform into entirely new substances with different properties.
  4. 8. regions around the nucleus where electrons are likely to be found.
  5. 9. A subatomic particle found in the nucleus that has no electrical charge.
Down
  1. 1. A table of all known elements arranged by increasing atomic number.
  2. 2. A change in a substance's form or state (like melting) that does not alter its chemical identity.
  3. 3. center of an atom
  4. 4. The group of stable, unreactive gases located in the far-right column of the periodic table.
  5. 7. A negatively charged subatomic particle that moves in the space around the nucleus.