Double Displacement Reactions

The purpose of this experiment was to study the different types of chemical reactions using physical and chemical properties and balanced chemical equations. There are four different types of chemical reactions decomposition reactions, single displacement reactions, synthesis reactions, and double displacement reactions.
A decomposition reaction happens when a compound breaks into two or more elements or compounds. Generally, for decomposition reactions heat, energy, light or electricity is needed to separate the compound. In a single displacement reaction, a single element replaces an element in a compound only if it is higher on the activity series. A mental can only replace another mental and a nonmetal can only replace another nonmetal.
Safety goggles were put on, hair was tied back and sleeves were rolled up. One cm of CuSO4·5H20 was added to a cleaned dried test tube. The test tube was heated until no furthered changes were observed. All observations were recorded then the substance was then disposed of in the waste container provided. 1/3 of a test tube was filled with Na2SO4 solution. An eye dropper filled with BaCl2 was added to the test tube. All observations were recorder. A 3 cm long trip of Magnesium ribbon was held above a flame of a Bunsen burner. The result of the flame should not be directly looked at. All observations were recorded. A test tube was filled 1/3 of dilute H2SO4. A sanded mossy piece of zinc mental was added to the acid and the test tube was covered. A flaming splint was brought to the mouth of the test tube. All observations were recorded. A sanded iron nail was added to a test tube and covered with CuSO4 solution. The test tube was left for several minutes. The nail was then removed and observations were recorded. An eyedropper full of lead(II) nitrate was added to a test tube combined with an eyedropper full of potassium iodide. The reaction was left for serval minutes before observations were recorded. The substance was then disposed of in the waste container provided. Manganese (V) oxide was added to a test tube with hydrogen peroxide and the test tube was then covered. A glowing splint test was then inserted into the test tube. All observations were then recorded. Metals were thrown in the trash while most solution were poured down the drain