Chemical Reaction Lab Report

Equipment- 250mL beaker, 125mL Erlenmeyer flask, cardboard square, chemical scoop, metric ruler, lab countertop, rubber stoppers, safety goggles, lab apron

The Copper (II) Nitrate had the most impressive reactions of all the substances in my mind.. The substance turned yellowish-green and dissolved immediately when introduced to HCl. When it was heated directly over the flame it melted and started producing gas in the test tube. When mixed with cold water it dissolved into a clear blue liquid, but then behaved very violently when boiled with water.

Wash porcelain crucible with soap thoroughly and the rinse off the excess soap as removing as much as possible. Put the crucible on top of the iron ring. He the crucible for 10 minutes to insure all excess water is off. Once the crucible has cooled completely off, find the mass. Place a 20 cm long ribbon of magnesium in the crucible and then weight the both

The magnesium strip was then collected. The magnesium was cut into small strips and folded into a zigzag shape. It was placed it in the crucible and weighed on the electronic balance with the lid. The result was recorded

A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?

Working in the hood or a designated work area, add about 1 mL of ethyl alcohol to a clean evaporating dish. Place the evaporating dish on a heat- resistant pad.

The materials needed for this experiment included test tubes, a test tube holder, the unknown compound #202, 35mL beakers, gloves, safety goggles, ethanol (to clean equipment), stirrer (to mix solutions), the 15 possible compounds that are provided, pH strips, distilled water, wooden splints, spatula to get out unknown compound #202, waste bucket, Bunsen burner, graduated cylinder, 500mL beaker for the waste, plastic dishes to measure out compound and the scale.

To begin Lab 7 of Chem 115, a clean and dry porcelain crucible and its cover were obtained. Next, an iron ring was attached to a ring stand. A clay triangle was placed on top to the ring and a Bunsen burner was placed under the ring. Following the setup for the experiment, the crucible and its cover were placed on the clay triangle and were heated for about five minutes. After, the burner was turned off and the crucible and cover were left to cool to room temperature. Once the crucible and its cover had reached room temperature, tongs were used to move them to a wire gauze. Using the wire guaze, the crucible and its cover were transported to an analytical scale to weigh and record the mass of it. Next, a strip of magnesium was obtained and

Using the crucible tongs, take a magnesium strip and hold it in hot spot (just above the inner cone of fire) on the bunsen burner.

The materials that were used to carry out the experiments on the water samples were ten testing kits. We ran 10 tests on all

Prepare the vessel for running the experiment. A fish tank will be used to simulate the natural environment, such as a lake, where these reactions would occur. The vessel needs to be duly and appropriately cleaned, and rinsed with distilled water to make sure that there are no contaminants within it.

The main objective is not only to reach the optimum ratio to generate the greatest amount of heat and temperature, but also to maintain a constant volume throughout the entire experiment.

Safety glasses: Wear safety glasses to protect eyes from substances, acids and flames that can irritate or damage the eyes.

Purpose: The purpose of this experiment was to observe the many physical and chemical properties of copper as it undergoes a series of chemical reactions. Throughout this process, one would also need to acknowledge that even though the law of conservation of matter/mass suggests that one should expect to recover the same amount of copper as one started with, inevitable sources of error alter the results and produce different outcomes. The possible sources of error that led to a gain or loss in copper are demonstrated in the calculation of percent yield (percent yield= (actual yield/theoretical yield) x 100.

The materials used in this experiment were; Bunsen burner and hose, tongs, 2 evaporating dishes, a balance, a wash glass, 100 mL graduated cylinder, 2 ring stains, 2 clay triangles, 2 iron rings, and a class steering rod. The chemicals