chemical balance

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Across
  1. 2. Chemical equation correctly shows that no mass was created or destroyed during the reaction
  2. 6. bonds force of attraction that exists between atoms.
  3. 8. atom that has lost or gained an electron and therefore carries an electric charge
  4. 9. of mass Mass is never created or destroyed it just changes forms
Down
  1. 1. electrons the number of electrons on the outermost energy level of an atom
  2. 3. group of atoms that are joined together with covalent bonds chemical bond formed when atoms share electrons
  3. 4. The substances produced after a chemical reaction
  4. 5. The substances present before a chemical reaction
  5. 7. positive ion is an atom that has lost electrons, resulting in an overall positive charge