1. BALANCING EQUATIONS NO2 - Balancing equations made easy

2. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 Step 1: list all the elements neatly under the arrow KNOKNO

3. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO Now add up how many K N and O you have on each side

4. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO Now add up how many K N and O you have on each side 1

5. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO Now add up how many K N and O you have on each side 11

6. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO Now add up how many K N and O you have on each side 11

7. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO3KNO3 KNOKNO Now add up how many K N and O you have on each side 11 1

8. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO3KNO3 KNOKNO Now add up how many K N and O you have on each side 11 11

9. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO Now add up how many K N and O you have on each side 11 11

10. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO Now add up how many K N and O you have on each side 11 11 3

11. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO Now add up how many K N and O you have on each side 11 11 32 + 2 = 4

12. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO K and N are fine BUT O is not balanced 11 11 3 4

13. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO 11 11 3 4 We need more O on the left hand side We only want 1 more O BUT we can only have 1KNO 3, or 2KNO 3 or 3KNO 3

14. Here is an equation that needs to be balanced: KNO 2 + O 2 KNO 3 KNOKNO 11 11 3 4 Lets see what happens if we have 2 KNO 3 on the left

15. Here is an equation that needs to be balanced: KNO 2 + O 2 2KNO 3 KNOKNO 1 1 4 Lets see what happens if we have 2 KNO 3 on the left

16. Here is an equation that needs to be balanced: KNO 2 + O 2 2KNO 3 KNOKNO 1 1 4 Lets see what happens if we have 2 KNO 3 on the left 2

17. Here is an equation that needs to be balanced: KNO 2 + O 2 2KNO32KNO3 KNOKNO 1 1 4 Lets see what happens if we have 2 KNO 3 on the left 2 2

18. Here is an equation that needs to be balanced: KNO 2 + O 2 2KNO 3 KNOKNO 1 1 4 Lets see what happens if we have 2 KNO 3 on the left 2 2 2 x 3 = 6

19. Here is an equation that needs to be balanced: KNO 2 + O 2 2KNO 3 KNOKNO 1 1 4 Lets see what happens if we have 2 KNO 3 on the left 2 2 6 OK, that looks like we might be able to balance it up on the RIGHT side now On the RIGHT we now need 1 extra K, 1 extra N and 2 extra O Can you see how?

20. Try 2 KNO2 on the right: KNO 2 + O 2 2KNO 3 KNOKNO 2 2 6 2

21. KNO 2 + O 2 2KNO 3 KNOKNO 2 2 6 2 2

22. KNO 2 + O 2 2KNO 3 KNOKNO 2 2 6 2 2 2

23. KNO 2 + O 2 2KNO 3 KNOKNO 2 2 6 2 2 2 2 x 2 + 2 = 6

24. 2KNO 2 + O 2 2KNO 3 KNOKNO 2 2 6 2 2 6 That is balanced!!!!!