Chemical Change Lab Report

In this experiment, we learned of effects and evidence of chemical change. We started the experiment with observance of a chemical reaction between the previously present 1.0 M of copper nitrate and the added 1.5 M of sodium hydroxide. When mixed with a stirring rod, this created a blue milky liquid known as sodium nitrate. The solution was then put into 50.0 ml of boiling water. This produced a reaction in the sodium nitrate, the reaction being a change from a blue milky liquid into a brown muddy liquid. The products of the chemical change being copper oxide and water. After a cooling process where there was no observed change, 1.5 M of hydrochloric acid was added to the present solution in the test tube. Once mixed with a clean stirring rod, the solution became transparent with the products of the change being copper chloride and

Lastly, we placed a 10 cm piece of aluminum wire and left the aluminum wire in the test tube for about 2 days. Once examined, we found the aluminum wire forming copper on the portion that was emerged in the solution. During that timespan of two days two reactions took place, copper and aluminum chloride formed because of the reaction of copper chloride and aluminum, and hydrogen and aluminum chloride formed because of the reaction of the aluminum and hydrochloric acid. Through this experiment, we have got a much better understanding of the difference of physical and chemical changes, and to the same extent, physical and chemical properties. Also, since this was our first time handling any chemicals that are somewhat potent, we do have more experience heading into