1. 4.05 Chemical Reactions
Virtual Laboratory

2. Review the different types of Chemical Reactions
The Plan
Review the different types of Chemical Reactions
Complete the Virtual Lab via screen share/slides with teacher
Make predictions of reaction types
Discuss the analysis questions
Complete the lab on your own

3. Please open your virtual lab in the course
Before we Begin
Please open your virtual lab in the course

4. Create/Download the Lab Form
Copy and Paste the lab form into a document or download the pre-made form from the Chemistry Resource Center

5. Let’s Review!

6. Please Open the Virtual Lab

7. Follow the Steps
Take note of the reactants

8. Write the Formula for the Reactants
Iron (III) and Copper (II) Sulfate
First, identify the symbols and oxidation numbers
Iron (III) is Fe3+
Copper (II) is Cu2+
Sulfate is SO42-
Next, write the formulas. Switch the oxidation numbers to become the opposite element/compounds subscript. Ignore the charges 
Cu2+
SO42-
Fe + CuSO4 

9. Prediction
Fe + CuSO4 
What type of reaction might this be?
Why?

10. Play the Video, Make Observations

11. Click Here

12. Next Reaction

13. Write the Formula for the Reactants
Lead (II) Nitrate and Potassium Iodide
First, identify the symbols and oxidation numbers
Lead (II) is Pb2+
Nitrate is NO31-
Potassium is K1+
Iodide is I1-
Next, write the formulas. Switch the oxidation numbers to become the opposite element/compounds subscript. Ignore the charges 
Pb2+
NO31-
Pb(NO3)2 + KI 

14. Prediction
Pb(NO3)2 + KI 
What type of reaction might this be?
Why?

15. Next

16. Next Reaction

17. Write the Formula for the Reactants
Magnesium Metal Ribbon and Hydrochloric Acid
First, identify the symbols and oxidation numbers
Magnesium is Mg2+
Hydrochloric Acid is H1+ and Cl1- or HCl
Can you write the reactant side of this equation?

18. Prediction
Mg + HCl 
What type of reaction might this be?
Why?

19. Next

20. Next Reaction

21. Write the Formula for the Reactants
Electrolysis of Water
First, identify the symbols and oxidation numbers
Water is H2O
This lab is different right? You only have ONE reactant and they show you the products in the video. What is our equation?

22. Prediction
H2O
What type of reaction might this be?
Why?

23. LASTLY

24. Next Reaction

25. Write the Formula for the Reactants
Burning Magnesium
First, identify the symbols and oxidation numbers
Magnesium is Mg2+
This lab is different too! You only have ONE reactant. This forms a new substance at the end. What allowed the Mg to burn? What is our equation?

26. Mg + O2 Prediction What type of reaction might this be? Why?
Could it be something else?

27. Writing our balanced equations
Fe + CuSO4  *
Iron (III) is Fe3+
Copper (II) is Cu2+
Sulfate is SO42-
Iron and Copper will switch places
Fe3+
SO42-
 Cu + Fe2(SO4)3

28. Fe + CuSO4  Cu + Fe2(SO4)3 Balance this!
Is this balanced? What do we need to do to balance it?
What type of reaction is this?

29. Writing our balanced equations
Pb(NO3)2 + KI  *
Lead (II) is Pb2+
Nitrate is NO31-
Potassium is K1+
Iodide is I1-
Lead and Potassium will switch places
K1+
NO31-
Pb2+
I1-
 PbI2 + KNO3

30. Pb(NO3)2 + KI  PbI2 + KNO3 Balance this!
Is this balanced? What do we need to do to balance it?
What type of reaction is this?

31. Writing our balanced equations*
Mg + HCl 
Magnesium is Mg2+
Hydrochloric Acid is H1+ and Cl1- or HCl
Magnesium and Hydrogen will switch places
**Remember that Hydrogen is a diatomic molecule**
Mg2+
CI1-
 H2 + MgCl2

32. H2 + MgCl2 Mg + HCl  Balance this!
Is this balanced? What do we need to do to balance it?
What type of reaction is this?

33. Writing our balanced equations
H2O  *
**The video showed you the products**
Hydrogen and oxygen are both diatomic molecules
 H2 + O2

34. Balance this!
H2O 
H2 + O2
Is this balanced? What do we need to do to balance it?
What type of reaction is this?

35. Writing our Balanced Equations
Mg + O2
Magnesium is Mg2+
Oxygen is O2-
From the lesson
Not all combustion reactions involve organic compounds made of carbon and hydrogen, which means that the products are not always carbon dioxide and water. Other substances, both compounds and elements, can burn in oxygen. These reactions can often be categorized as synthesis reactions, but they are considered combustion reactions as well because a substance is reacting with oxygen and releasing energy.

36. Balance this!
Mg + O2 
MgO
Is this balanced? What do we need to do to balance it?
What type of reaction is this?
Is there another choice?

37. #1~ We’ve written the balanced equations
Analysis
#1~ We’ve written the balanced equations
#2~ What does the law of conservation of mass state? Is this a closed container? Where did the gas go?
#3~ Which reaction that we investigated can be more than one type?

38. Congrats!!
Great job! We did it!!

39. Questions?