Science

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Across
  1. 2. New compound formed by reactants
  2. 5. Absorbs heat energy
  3. 7. Negatively charged subatomic particle
  4. 9. Uncharged atomic particle
  5. 10. Substance undergoes a chemical change
  6. 12. Found in nucleus with a positive charge
  7. 15. Combination of elements to form a whole
  8. 16. Substance that participated in a chemical change
  9. 19. breaks down complex matter
  10. 20. Substance burns in presence of oxygen
Down
  1. 1. Lacks characteristics of metal
  2. 3. all elements arranged by atomic number
  3. 4. Group of atoms with a electric charge
  4. 6. Amount of mass in a substance
  5. 8. Releases heat
  6. 11. Two atoms share electrons
  7. 13. Statement with a equal to symbol
  8. 14. Chemical bond when a atom gives up one electron
  9. 17. Same number of protons but different number of neutrons
  10. 18. Solid material