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