The five different reactions types are as follows: decomposition, single displacement, double displacement, synthesis, and combustion. Decomposition is when a larger substance is broken down into two smaller substances. Single displacement is a free element displaces another element from a compound to produce a different compound and a different free element. Double displacement is when two compounds exchange ions or elements to form new compounds. Synthesis is a chemical reaction in which atoms or simple molecules combine to form a compound that is more complex. Combustion is a violently, exothermic reaction usually with oxygen to form oxides and energy is released. The purpose of this lab was to become more familiar with the five types of chemical reactions and determine the reaction types of the chemical elements we used.
Lab Safety:
While experimenting with these chemicals we used lab aprons, safety goggles, close-toed shoes, we were sure not to touch the chemicals on our skin, and used the fume hood for our experiment.
NO hypothesis needed
Procedure:
First of all, we need to obtain 3 individual test tubes. Contained within the first test tube, is a piece of Zn and about 1/2 ml of CuSO4. Record observations. Within the second test tube insert about 1/2 ml Ba(NO3)2 solution to about 1/2 ml of CuSO4 solution. Record observations. Within the third test tube place a piece of magnesium ribbon. Then, add about 1/2 ml of HCL solution. Record observations. Furthermore, light a bunsen burner(burning propane gas, C3H8) and record observations of the flame. After, experimenting with the first three test tubes rinse them out and add about 2 Ml of H2O2 solution. Then lightly heat it and record observations. In the second test tube add a pinch of MnO2 (catalyst) to the H2O2 solution, then lightly heat it and record observations.
Data:
Data Analysis:
Zn+CuSO4 -> Cu+ZnSO4
Ba(NO3)2+CuSO4 -> Ba SO4+Cu(NO3)2
Mg+2HCl -> H2+MgCl2
2C3H8+8O2 -> 6CO2+4H2O
2H2O2 -> 2H2O+O2
Conclusion:
This lab helped us recognize different chemical reactions and reaction types, while having a hands on lab and fun procedure. While observing these chemical reactions we noticed that in the first reaction zinc and copper traded places in a single displacement reaction. In the second, we observed barium and copper traded places in a double displacement reaction. In the third, we notice a single displacement reaction with hydrogen and magnesium. IN the fourth, we observe a combustion reaction between carbon, hydrogen, and oxygen. In the last reaction we observed a decomposition reaction with hydrogen and oxygen.
We liked to play with fire!
