THE CLASSIFICATION OF CHEMICAL REACTIONS
Wednesday, April 1st, 2014
The purpose of this lab is to determine the different types of chemical reactions and differentiate between them based on similar characteristics of each set category. In this lab it is hypothesized that every chemical reaction which was observed would fall under already set categories (that are: synthesis, decomposition, single displacement, double displacement, combustion and neutralization). Synthesis reactions occur when multiple reactants combine to produce a product (i.e. 2H2 (g) + O2 (g) 2H2O (l)). Decomposition reactions occur when a single reactant breaks down into multiple products (i.e. 2KCl (S) 2K (s) + Cl2 (g)). Single displacement reactions occur when one more active element kicks out or displaces another less active element in a compound (i.e. Zn (s) + CuSO4 (aq) ZnSO4 (aq) + Cu (s)). Double displacement are similar to single displacement reactions however two elements are displaced instead (they switch compounds, observe: KCl (aq) + AgNO3 (aq) AgCl (s) + KNO3 (aq)). A neutralization reaction double displacement reaction that occurs between an acid and base when they are combined (i.e. H2SO4 (aq) + 2NaOH (aq) Na2SO4 (aq) + 2H2O (aq)). Combustion reactions are examples of spontaneous oxidization, also commonly known as burning, heat is (usually) necessary to start this reaction (i.e. C3H8 (g) + 5O2 (g) 3CO2 (g) + 4H2O (g)).
Results (and to a lesser extent; Process)
A pinch of magnesium oxide was added to 5 drops of hydrogen peroxide (as a catalyst), small bubbles start floating and when the glowing splint test was done to the contents of the test tube and the glowing splint became brighter almost to the point where it almost reignited which proved the presence of oxygen gas. Station 2
A small piece of copper was added to 5 drops of silver nitrate and to copper appeared to...
Please join StudyMode to read the full document