1. Review Complete and Balance

2. K + CaO  TRY THIS ON YOUR OWN FIRST.

3. Hints… Single Replacement Reaction Metal replaces metal Potassium replaces the Calcium Think about charges on products

4. 2K + CaO  K 2 O + Ca

5. K + Cl 2  TRY THIS ON YOUR OWN FIRST.

6. Hints Only Two Elements Synthesis Reaction Think about charges on products

7. 2K + Cl 2  2KCl

8. H 2 O 2  TRY THIS ON YOUR OWN FIRST.

9. Hints Only One Compound Decomposition Reaction Don’t just break this one into its elements!

10. 2H 2 O 2  2H 2 O + O 2

11. Ba(NO 3 ) 2 (aq) + H 2 SO 4 (aq)  TRY THIS ON YOUR OWN FIRST.

12. Hints Double Replacement Reaction Positive ions trade places. Remember to check your charges. Look at solubility rules!

13. Ba(NO 3 ) 2 (aq) + H 2 SO 4 (aq)  BaSO 4 (s) + 2HNO 3 (aq)

14. C 2 H 6 + O 2  TRY THIS ON YOUR OWN FIRST.

15. Hints Combustion Reaction Don’t forget that fuel needs oxygen to burn What two products are ALWAYS produced? Balance!

16. 2C 2 H 6 + 7O 2  4CO 2 + 6H 2 O

17. Write a balanced equation for the synthesis reaction that produces iron(III) oxide. Try it on your own first!

18. Hints Remember the iron(III) oxide is produced. What elements make up iron(III) oxide? Oxygen is diatomic. Balance.

19. 4Fe(s) + 3O 2 (g)  2Fe 2 O 3 (s)

20. Zinc metal reacts with a solution of copper(II) chloride. Try this on your own first.

21. Hint Single replacement reaction Zinc is a metal, so it will replace (kick out) the metal. Combine the zinc with the chlorine and make sure you check your charges.

22. Zn(s) + CuCl 2 (aq)  ZnCl 2 (aq) + Cu(s)

23. Magnesium metal is added to a solution of silver nitrate.

24. Hints Single Replacement Reaction Magnesium is a metal, so it will replace (kick out) the metal…copper. Make sure to think about charges of ions when writing the products Balance

25. Mg(s) + 2AgNO 3 (aq)  Mg(NO 3 ) 2 (aq) + 2Ag(s)

26. Write a balanced reaction for the reaction between solutions of potassium iodide and lead(II) nitrate. Try this on your own first.

27. Hints Write the formulas for the reactants correctly…check charges. Double replacement reaction. The two positive ions trade places. Write formulas for products correctly…check charges. Look at solubility rules to determine what precipitates.

28. 2KI(aq) + Pb(NO 3 ) 2 (aq)  2KNO 3 (aq) + PbI 2 (s)

29. Try this on your own first. Write the reaction that occurs when solutions of calcium hydroxide and hydrochloric acid are mixed.

30. Hints This is double replacement. Write correct formulas for reactants…check your charges! Trade the positive ions. What do you make when H + and OH - hook together?

31. Ca(OH) 2 (aq) + 2HCl(aq)  CaCl 2 (aq) + 2H 2 O(l)