Chemical Reactions Lab BW

What type of reaction is the following:

4 Fe (s) + 3O₂ (g) ---> 2 Fe₂O₃ (s)

What type of reaction is the following:

C₃H₈ (g) + 5 O₂ (g) ---> 3 CO₂ (g) + 4 H₂O (g)

What type of reaction is the following:

2 Al (s) + 3 CuCl₂ (aq) ---> 3 Cu (s) + 2 AlCl₃ (aq)

What type of reaction is the following:

Pb(NO₃)₂ (aq) + 2 KI (aq) ---> PbI₂ (s) + 2 KNO₃ (aq)

What type of reaction is the following:

CuCO₃ (s) ---> CuO (s) + CO₂ (g)

Select all of the following characteristics that indicate a chemical reaction has occured.

For reaction #1, what color will the cobalt chloride test paper be when it comes in contact with water vapor?

For reaction #2, you should look directly at the buring magnesium.

For reaction #3, where do you place the 1 mL of ethyl alcohol?

For reaction #4, you should cross contaminate the two stock bottles of calcium chloride and sodium bicarbonate by mixing up the two pipettes.

For reaction #5, why should you be cautious of using the silver nitrate?