PHYSICAL SCIENCE / CHEMICAL REACTIONS

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Across
  1. 2. Li2O
  2. 4. Al2S3
  3. 6. WHEN A CHEMICAL EQUATION IS BALANCED, THERE ARE ___ NUMBERS OF ATOMS ON BOTH SIDES.
  4. 8. OUTERMOST ELECTRONS THAT FORM CHEMICAL BONDS.
  5. 9. USED TO BALANCE CHEMICAL EQNS.
  6. 10. RIGHT SIDE OF CHEMICAL EQN.
  7. 12. ELEMENTS ON THE PT ARE ARRANGED BY ____ ATOMIC NUMBER.
  8. 13. COLUMNS ON THE PT
  9. 14. SELENIUM MONOXIDE
  10. 17. CaCl2
  11. 19. SODIUM CHLORIDE
  12. 21. NO2
  13. 22. NUMBER OF PROTONS IN ATOMIC NUCLEI.
  14. 25. WATER
  15. 28. MOST OF THE ELEMENTS ON THE PT ARE THESE.
  16. 29. MASS IS ___ IN CHEMICAL REACTIONS.
  17. 30. CHEMICAL REACTIONS THAT ABSORB HEAT.
  18. 31. MADE OF TWO OR MORE ATOMS. CAN BE SAME OR DIFFERENT.
  19. 32. ROWS ON THE PT
  20. 34. MADE OF TWO OR MORE DIFFERENT ELEMENTS.
  21. 35. CHEMICAL BOND THAT FORMS WHEN ATOMS SHARE e.
Down
  1. 1. A + BC => AB + C
  2. 3. CHEMICAL EQUATIONS ARE ___ TO SHOW AMOUNTS OF REACTANTS AND PRODUCTS.
  3. 5. A + B => AB
  4. 7. WHAT HAPPENS TO ATOMS IN CHEMICAL REACTIONS.
  5. 11. CCl4
  6. 15. LEFT SIDE OF CHEMICAL EQN.
  7. 16. CHEMICAL REACTIONS THAT GIVE OFF HEAT.
  8. 18. ATOMS THAT HAVE LOST OR GAINED ELECTRON(S).
  9. 20. REQUIRED FOR ALL CHANGES.
  10. 23. AB => A + B
  11. 24. REACTION THAT OCCURS WHEN SUBSTANCES BURN IN AIR.
  12. 25. AB + CD => AC + BD
  13. 26. IF YOU SAY THIS IS TOO HARD, YOU ARE ___.
  14. 27. SUM OF PROTONS AND NEUTRONS IN ATOMIC NUCLEI.
  15. 33. CHEMICAL BOND THAT FORMS WHEN ATOMS TRANSFER e.