the joy of
DESCRIPTION
The Joy of. Balancing Equations. What we already know…. Coefficient 2 CaCl 2 The 2 tells you that there are 2Ca and 4Cl CaCl 2 Subscript The little two tells you that there are 2 Cl. A + B = Not chemically bonded , so its not a compound! - PowerPoint PPT PresentationTRANSCRIPT
The Joy of
Balancing Equations
What we already know…
• Coefficient 2CaCl2
The 2 tells you that there are 2Ca and 4Cl
• CaCl2 Subscript
The little two tells you that there are 2 Cl.
A + B = Not chemically bonded, so its not a compound!
AB = This is a compound which is chemically bonded.
NEVER ADD SUBSCRIPTS!
So…Let’s practice some more!
Helpful hints to be successful with Balancing
Equations•Remember to… • Draw your line separating the
“reactants” from the “products”.• Make a list of the elements on each side.• “Attack” the compounds first!• Save the “Elements” for last. • If you hit a “Dead End” remember to go
back and double your coefficients. Try it!• Double check your work so that it is
equal on both sides of the equation.
Balancing Equations Warm up
Git-R-Done!1.H2 + O2 H2O
2. HgO Hg + O2
3. CO2 + H2O C6H12O6 + O2
4. Zn + HCl ZnCl2 + H2
Balancing Equations Warm up Answers
1.2H2 + O2 2H2O
2. 2HgO 2Hg + O2
3. 6CO2 + 6H2O C6H12O6 + 6O2
4. Zn + 2HCl ZnCl2 + H2
Balancing Equations Classwork
5. SiCl4 + H2O H4SiO4 + HCl
6. Na + H2O NaOH + H2
7. H3PO4 H4P2O7 + H2O
*8. C7H6O2 + O2 CO2 + H2O
Balancing Equations Classwork
5. SiCl4 + 4H2O H4SiO4 + 4HCl
6. 2Na + 2H2O 2NaOH + H2
7. 2H3PO4 H4P2O7 + H2O
8. 2C7H6O2 + 15O2 14CO2 + 6H2O
Balancing Equations Classwork
9. H2SO4 + HI H2S + I2 + H2O
10. Al + HCl AlCl3 + H2
11. PCl5 + H2O HCl + H3PO4
Balancing Equations Classwork Answers
9. H2SO4 + 8HI H2S + 4I2 + 4H2O
10. 2Al + 6HCl 2AlCl3 + 3H2
11. PCl5 + 4H2O 5HCl + H3PO4
Balancing Equations Homework
12. Mg + N2 Mg3N2
13. Fe + H2O Fe3O4 + H2
14. NaOH + Cl2 NaCl + NaClO + H2O
15. N2 + H2 NH3
16. C3H6 + O2 H2O + CO2
17. N2 + O2 N2O
Balancing Equations Homework Answers
12. 3Mg + N2 Mg3N2
13. 3Fe + 4H2O Fe3O4 + 4H2
14. 2NaOH + Cl2 NaCl + NaClO + H2O
15. N2 + 3H2 2NH3
16. 2C3H6 + 9O2 6H2O + 6CO2
17. 2N2 + O2 2N2O
Balancing Equations Warm up
18. Al + FeO Al2O3 + Fe
19. Fe2O3 + H2 Fe + H2O
20. K2O + H2O KOH
21. H2O2 H2O + O2
Balancing Equations Warm up Answers
18. 2Al + 3FeO Al2O3 + 3Fe
19. Fe2O3 + 3H2 2Fe + 3H2O
20. K2O + H2O 2KOH
21. 2H2O2 2H2O + O2
Balancing Equations Classwork
22. Al + O2 Al2O3
23. C7H16 + O2 CO2 + H2O
24. Na2O2 + H2O NaOH + O2
25. SiO2 + HF SiF4 + H2O
26. N2 + H2 NH3
27. KClO3 KCl + O2
28. H3AsO4 As2O5 + H2O
Balancing Equations Classwork Answers
22. 4Al + 3O2 2Al2O3
23. C7H16 + 11O2 7CO2 + 8H2O
24. 2Na2O2 + 2H2O 4NaOH + O2
25. SiO2 + 4HF SiF4 + 2H2O
26. N2 + 3H2 2NH3
27. 2KClO3 2KCl + 3O2
28. 2H3AsO4 As2O5 + 3H2O
Balancing Equations Homework
29. KClO3 KClO4 + KCl
30. P4O10 + H2O H3PO4
31. Na2CO3 + HCl NaCl + H2O + CO2
32. K + Br2 KBr
33. P4 + O2 P2O5
34. N2O5 + H2O HNO3
35. Fe2O3 + CO Fe + CO2
Balancing Equations Homework Answers
29. 4KClO3 3KClO4 + KCl
30. P4O10 + 6H2O 4H3PO4
31. Na2CO3 + 2HCl 2NaCl + H2O + CO2
32. 2K + Br2 2KBr
33. P4 + 5O2 2P2O5
34. N2O5 + H2O 2HNO3
35. Fe2O3 + 3CO 2Fe + 3CO2
Challenging Equations
36. H3BO3 H4B6O11 + H2O
37. H2S + Cl2 S8 + HCl
38. S8 + O2 SO3
39. C3H8 + O2 CO2 + H2O
40. FeS2 + O2 Fe2O3 + SO2
Challenging Equations Answers
36. 6H3BO3 H4B6O11 + 7H2O
37. 8H2S + 8Cl2 S8 + 16HCl
38. S8 + 12O2 8SO3
39. C3H8 + 5O2 3CO2 + 4H2O
40. 4FeS2 + 11O2 2Fe2O3 + 8SO2
More Challenging Equations
41. C2H6 + O2 CO2 + H2O
42. H3PO4 + KOH K3PO4 + H2O
43. CaCO3+H3PO4 Ca3(PO4)2+H2CO3
44. Pb(OH)4+Cu2O PbO2+CuOH
45. Sn(NO2)4+Pt3N4 Sn3N4+Pt(NO2)4
More Challenging Equations Answers
41. 2C2H6 +7O2 4CO2 + 6H20
42. H3PO4 + 3KOH K3PO4 + 3H2O
43. 3CaCo3+2H3PO4 Ca3(PO4)2+3H2CO3
44. Pb(OH)4+2Cu2O PbO2+4CuOH
45. 3Sn(NO2)4+Pt3N4 Sn3N4+3Pt(NO2)4
Vinegar Reacting With Baking Soda
CH3COOH + NaHCO3 H2O + NaOCOCH3 + CO2