Chemical Reactions And ID Reactants And Products

Of The Reactions Essay, Research Paper

IPurpose: Observe chemical reactions and ID reactants and products of the reactions.Classify the reactions and write balanced Equations.

IITheoretical Background: A chemical reaction is a what happens to components thatcauses a physical change.

IIIHypothesis: You can determine a chemical rxn by the physical change that takes place.

IV(A) Equipment: Burner, wood splints, crucible tongs, microspatula, test tubes 7,test tube holder, test tube rack, sandpaper, evaporating dish, safety goggles,lab apron or coat.

(B) Material: Zn, Cu, Mg, CuCO3, HCl, CuSO4, Zn(C2H3O2)2, Na3PO4,Na2SO3.

VProcedure:1. Use Sandpaper to clean the Cu.2. Hold the Cu with the crucible tongs in the hotest part of the flame for about 2 minutes.Note the change in the Cu.3. Put an evaporating dish near the base of the burner, and with crucible tongs put apiece of Mg in the flame and do not look at the flame.4. Place 2 heaping microspatulas of CuCO3 in a test tube. note appearance.5. Put test tube over the flame for 3 minutes and CO2 will now be present.6. Put HCl and Zn in a test tube. Note changes.7. Hold a test tube over the test tube with the HCl and the Zn. After thirty seconds put aburning wood splint in the test tube, a pop will indicate the presence of hydrogen gas.8. Add about 5ml of CuSO4 in a clean new test tube. Put a piece of Zn in the solution .Note appearance of solution before and after Zn is in the tube.9. Add 2ml of (Zn(C2H3O2)2) to a new test tube. Then add about 2ml of Na2PO3 to thetest tube. Observe Changes.10. Add about 5ml of Na2SO3 to a new test tube. Then add about 1ml of 6 M HCl. Smell,but not directly.VIObservations:On step two the copper turned black when in the flame. After the Mg would flared in thefire, the Mg turned to ashes. The CuCO3 was a white powder, and after it was in theflame CO2 was present and the CuCO3 turned black. the Zn and HCl started to bubbleand their was a pop indicating Hydrogen gas. The Zinc turned black and the clear CuSO4became green. The (Zn(C2H3O2)2), and the Na2PO3 became mirky white. In closing Icould not Smell the Na2SO3, and the HCl.VIIIChemical Reaction:Their were many Chemical Rxn in this lab and are stated in the observations.IXReferences:The Paper given during the class.XConclusions:


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