Chemistry Crossword

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Across
  1. 3. The electrically neutral particle in the nucleus of atoms.
  2. 4. A kind of chemical bonds where atoms share their electrons, forming molecules
  3. 6. The __________ number of an atom is defined by the number of protons the atom has.
  4. 7. The ________ number of an atom is defined by the sum of its protons and neutrons.
  5. 8. The positive-charged particle in the nucleus of the atom.
  6. 9. The negative-charged particle in atoms.
  7. 10. The simplest atom in the periodic table: it has only one proton and one electron.
Down
  1. 1. Where the electrons are located in an atom
  2. 2. When we combine cations and anions (ions), we have an ________ bond.
  3. 4. A positively-charged ion.
  4. 5. A negatively-charged ion.