1. Describing Chemical Reactions
(6.1)

2. What kind of chemical reactions can you think of?

3. What kind of chemical reactions can you think of?
- burning wood
- baking soda and vinegar
- diet coke and mentos
- rust on your car

4. How about?
When I heat copper (II) carbonate, it becomes carbon dioxide and copper (II) oxide.

5. How about?
When I heat copper (II) carbonate, it becomes carbon dioxide and copper (II) oxide.
That’s harder to remember!

6. Word Equations This is a little easier
energy + copper(II) carbonate  carbon dioxide copper(II) oxide

7. Word Equations This is a little easier
energy + copper(II) carbonate  carbon dioxide copper(II) oxide

8. Word Equations This is a little easier
energy + copper(II) carbonate  carbon dioxide copper(II) oxide
reactants products
on the left on the right

9. Chemical Equations A chemical equation gives even more information.
Energy + CuCO3 (s)  CO2 (g) + CuO (s)

10. Chemical Equations A chemical equation gives even more information.
Energy + CuCO3 (s)  CO2 (g) + CuO (s)
(s) tells us that is a solid.
(g) = gas and (l) = liquid.

11. Chemical Equations A chemical equation gives even more information.
Energy + CuCO3 (s)  CO2 (g) + CuO (s)
(s) tells us that is a solid.
(g) = gas and (l) = liquid.
also (aq) = aqueous which means dissolved in water

12. Chemical Equations are used extensively so we need to be comfortable with them.

13. Guidelines
# left (reactants)  right (products)

14. Guidelines
#1 left (reactants)  right (products) #2 If there is more than one reactant or product, use a ‘+’ in between.

15. Guidelines
#1 left (reactants)  right (products) #2 ‘+’ means ‘and’. #3 The  arrows is read as: ‘produces’, ‘yields’ or ‘forms’

16. Guidelines
#4 Energy on the reactant side means energy is required to make the reaction go.

17. Guidelines
#4 Energy on the reactant side means energy is required to make the reaction go. #5 Energy on the product side means energy is released.

18. Oral Practice
Iron + sulfur  iron (II) sulfide + energy

19. Oral Practice Iron + sulfur  iron (II) sulfide + energy Did you say
“ iron and sulfur react to produce iron two sulfide and energy is released” ?

20. Whiteboard practice
What is the name for
CuSO4 ?

21. Whiteboard practice What is the name for CuSO4 ? Did you say...
copper (II) sulfate ? Remember...

22. CuSO4 ? +1
Cu SO4

23. CuSo4 ? +1
Cu So4

24. Try this... Can you write the word equation for this...
When I add zinc to aqueous copper (II) sulfate it gets warm and I’m left with bits of solid copper and aqueous zinc sulfate.

25. Zinc + copper (II) sulfate  zinc sulfate + copper + energy

26. Zinc + copper (II) sulfate  zinc sulfate + copper + energy
Now...write the chemical equation! You can do it!

27. Zn (s) + CuSo4(aq)  ZnSo4(aq) + Cu(s) + energy
Did you get some of that?

28. Zn (s) + CuSo4(aq)  ZnSo4(aq) + Cu(s) + energy
Did you get some of that?

29. Sodium (solid) is added to solid iron (III) oxide and it creates sodium oxide which is a solid and pure iron.

30. Na(s) + Fe2O3 (s)  Na2O (s) + Fe (s)

31. Homework
P # 1,2,3,4