Physical and Chemical Properties

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Chapter 1 Lab: Physical and Chemical Properties

Purpose

The purpose of this experiment was to explore the chemical and physical properties of copper metal, magnesium, magnesium oxide, mossy zinc, sodium chloride, copper II nitrate, and copper (II) carbonate.

Procedure

On each of the previous substances stated, I did several experiments. I observed color, odor, the effects of heat, the effects of cold H2O, the effects of hot H2O, the results of a litmus test, the effects of diluted HCI, and the effects of diluted NaOH. I created a table with observations from each experiment below. In each of these observations, I noted if there were any changes in color, odor, if there were any gasses present, any sounds present, if the solution was soluble, or whether the substance changed from solid to liquid.

Observations and Results
Substance NameColorOdorEffect of HeatCold H2OHot H2OLitmus TestDilute HCIDilute NaOH MgMetallic silverNo detectable odor at room temperatureWhen the dry substance is put on heat, it stays the same color. It creates gasses, and has a definite odor. There is a sound that comes from the substance also. My guess is that something is burning off of the substance, because after it is on heat for a certain amount of time, the sound, odor, and gasses cease.When mixed with cold H2O, color and odor remain the same as the substance was at room temperature. Although the majority of the substance is not soluble in the water, I have to think that a small amount of it is. My reason for believing this is that when the water was added to the substance, the water became slightly cloudy.When the H2O is heated, color and odor remain the same as the substance did at room temperature. The substance is still not soluble, just as it was not in the cold water.When a drop of the solution mixed with cool water is added to the blue litmus paper, outside of the droplet area turns a deeper shade of blue (or purple) and the center is a lighter shade of blue. When a drop is added to the red litmus paper (in my opinion pink), it stays the same color, except for a tiny area in the center of the droplet area that turns a very light shade of purple. When HCI is added to the substance, it creates an exothermic reaction. The test tube becomes very hot, and the substance makes a fizzling sound while bubbling. The substance remains the same color , and has a slight odor (I believe that the odor might be coming from the HCI more so than the substance.). The solution is not soluble in HCI.When NaOH was added to the substance, it stayed the same color. I did not notice any odor. The substance was not soluble in the NaOH. CuRed-brown (copper color)No detectable odor at room temperatureWhen the dry substance is put on heat, it changes to a dark brown color. It creates no gasses or odor that I noticed. When mixed with cold H2O, color and odor remain the same as the substance was at room temperature. The substance is not soluble in the cold water.When the H2O is heated, color and odor remain the same as the substance was at room temperature. The substance is not soluble in the cold water.When a drop of the solution mixed with cool water is added to the blue litmus paper, outside of the droplet area turns a deeper shade of blue (or purple) and the center is a lighter shade of blue. When a drop is added to the red litmus paper (in my opinion pink), it stays the same color.When HCI is added to the substance, it creates an does not get hot like the other experiments. The substance remains the same color , however the HCI becomes tinted a slightly yellow color.There is a slight odor (I believe that the odor might be coming from the HCI more so than the substance.). The majority of the solution is not soluble in HCI, however I believe some of it may be. I came to this conclusion after observing the slight color change in the HCI.When NaOH was added to...
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