physical science

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Across
  1. 3. made up of protons, neutrons, and electrons
  2. 4. the transferring of electrons to other atoms
  3. 5. gives off heat/energy
  4. 7. the forming of a new substance
  5. 9. two or more atoms held together by chemical bonds
Down
  1. 1. electrons on the outermost shell of an atom
  2. 2. ex. every molecule of sugar inside a marshmallow
  3. 6. the links between atoms in a substance that determines its identity
  4. 8. traps heat/energy
  5. 10. the sharing of electrons with other atoms