Science crossword

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Across
  1. 2. what holds together a molecule.
  2. 6. a type of bond between atoms that share electrons
  3. 8. what lets you see what elements a molecule contains
  4. 9. a type of reaction that gives of heat
  5. 10. the outermost negatively charged subatomic particles that help atoms bond with one another
Down
  1. 1. a type of reaction that takes in heat
  2. 3. when this happens the chemical properties, physical properties, and chemical bonds are changed
  3. 4. a group of atoms
  4. 5. contains protons, neutrons, and electrons
  5. 7. a type of bond that transfers electrons between atoms and bonds the atoms
  6. 9. a negatively charged subatomic particle