Reaction Types Lab
Name______________________ Hr___
Objective: Observe different types of chemical reactions, predict the products, and write balanced
chemical equations.
Safety: (Record 4 specific precautions)
Part 1: Synthesis Reaction
Equipment: Iron filings, Bunsen burner, matches
1.
Take a pinch of iron filings and sprinkle them onto the Bunsen burner flame.
2.
Record your observations:______________________________________________________
_____________________________________________________________________________
In this reaction the iron is reacting with oxygen from the atmosphere. Write the balanced equation,
knowing that the product includes iron(III) ions.
Part 2: Decomposition Reaction
Equipment: Calcium carbonate, Bunsen burner, large test tube and holder, wood splint
1. Place a scoop of calcium carbonate into a clean dry test tube.
2. Using a test tube holder, heat the test tube strongly in a burner flame for about 1 minute.
3. Insert a burning wood splint in the test tube to test for the presence of carbon dioxide gas, which
will put the flame out.
4. Discard waste into the garbage can.
Observations: ___________________________________________________________________
______________________________________________________________________________
Write the balanced equation for the decomposition of calcium carbonate.
Part 3: Single Replacement Reaction
Equipment: 4M HCl (hydrochloric acid), zinc metal, small test tube and holder, wood splint, matches
1. Stand a clean dry test tube in the test tube rack. Add approximately 5 mL of the HCl to the tube.
2. Carefully drop a piece of zinc metal into the acid in the test tube.
3. After the reaction has occurred for about 30 seconds, quickly insert a burning wood splint into the
mouth of the tube.
4. Describe the sound that indicates the presence of hydrogen gas. Note the appearance of the
substance in the test tube.
5. Discard waste into the large beaker at the back of the classroom.
Observations: ________________________________________________________________
___________________________________________________________________________
Write a balanced equation for the zinc metal reacting with the hydrochloric acid solution.
____________________________________________________________________________
Part 4: Double Replacement Reaction
Equipment: Watch glass, aqueous barium chloride, aqueous potassium chromate
1.
2.
3.
4.
Obtain a clean, dry watch glass.
Place 3 drops of barium chloride on the watch glass.
Add 3 drops of potassium chromate onto the drops of barium chloride. Observe.
Wipe up waste with a paper towel and discard into garbage can.
Observations: ___________________________________________________________________
______________________________________________________________________________
Write a balanced equation for the double replacement reaction.
______________________________________________________________________________
Part 5: Combustion Reaction
In part 1 you combusted natural gas (CH4) when you lit the Bunsen burner.
Write a balance equation for the combustion of methane.
______________________________________________________________________________