Chemical Reaction Worksheet - IPSE FPMIPA Universitas Pendidikan Indonesia - Fundamental Chemistry
Chemical Reaction
Date :
Purpose :
1. To classify type of chemical reactions
2. To
identify chemical change characteristics
Basic Theory :
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Equipments: Beaker glass Test tube holder Spatula Crucible tongs Test tubes Sand paper Stand |
Graduated cylinder Clamps Pipette Rubber stopper Glass tube |
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Zn, Cu, Mg wires
K2CrO4 solution
HCl solution
CuCO3(s)
Ca(OH)2 solution
Pb(NO3)2 solution
Procedure 1
- Scrub a piece of copper, and magnesium wire until they are shiny.
- Hold the copper wire using crucible tongs, place in the hottest part of a burner flame for 1-2 minutes. Note the change and appearance caused by burning. ( Do the same procedure to the magnesium wire)
Procedure 2
- Carefully pour 5 mL of 1 M HCl(aq) into a dry test tube. Add a small piece of zinc metal into the acid. Note the change and appearance.
- Collect a quantity of gas resulted into a test tube containing water using one-hole rubber stopper and glass tube. (Do the same procedure using Mg wire).
Procedure 3
- Pour 2 mL of K2CrO4(aq) to a test
tube and add about 10 drops of Pb(NO3)2(aq) to the test
tube. Observe and note what happens.
Procedure 4
- Place 2 spatulas full of CuCO3 in
a large test tube.
Cover it using a one-hole rubber stopper. Insert the glass tube into the
stopper
- Place 5 mL of limestone, Ca(OH)2 into a
small test tube. Cover it by a one-hole
rubber stopper and connect it to the test tube containing CuCO3.
- Heat the test tube containing CuCO3. Note the change and appearance.
Observation
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Procedures |
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Data Analysis and Discussion
1.Write balanced equations
2. Identify reactants and products of the reactions
3. Determine chemical change characteristic
4. Classify chemical reactions into combination, displacement, combustion and metathesis reaction
Conclusion
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