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Lab 20: Solubility Inquiry Lab

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Solubility Inquiry Lab Introduction: The purpose of this lab was to identify the name of an unknown solid by dissolving it in different temperatures of water or dissolving different amounts of the solid. While doing this, we used a solubility curve graph of the three possible solutes which allowed us to determine what specific temperatures or amount of solute to test. Some important terms for this lab include solubility curve, solute, solvent, and saturated/unsaturated solution. A solubility curve is the graph of the maximum amount of a solute that can be dissolved, in 100 grams of water, at different temperatures. A solute is the substance that is being dissolved in the solvent. A solvent is the substance which is dissolving a solute. An example of a solute and solvent would be dissolving sugar in water where the sugar would be the solute and the water would be the solvent. A saturated solution is when there is the maximum amount of solute dissolved in water. A solution is ...
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Lab 18: Alka Seltzer and the Ideal Gas Law Lab

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Alka Seltzer and the Ideal Gas Law Lab Introduction: The purpose of this lab was to determine the mass of carbon dioxide released when a sample of alka seltzer is placed in water. This was done by collecting the gas in a balloon and measuring its dimensions after the reaction. This would allow us to get an estimate of about how much volume of gas was in the balloon and determine the amount of CO2 given off. We could determine the volume not only by measuring the size of the balloon but also filling the balloon to the same size with water and measuring the amount of water in a graduated cylinder.            (Balloon before alka seltzer put in water )          (Balloon after alka seltzer put in water) Data: Calculations: Analysis Questions: 1.    Discuss an area in this lab where expe r imental error may have occurred. One of the main spots we could have had an experiment al error was whe...
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Lab 16: Specific Heat of a Metal

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Specific Heat of a Metal Introduction: The purpose of this lab was the determine the identity of a metal by calculating its specific heat. This could be done by taking the mass and temperature of the different materials. We specifically used water to heat up the metal and used some known information about it to help determine different measurements about the metal like its energy lost and change in temperature. When we completed this lab, we first, heated up the metal in water keeping track of the masses and temperature. Then, we transferred the metal into cooler water to allow the metal to cool and compared the new temperatures to calculate the specific heat. Data: These were the measurements for our metal in the experiment: Calculations: To find the specific heat of the unknown metal we had to complete a two part calculation which included first finding the energy gained water which was also the energy lost from the metal. This was done by multiplying t...
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Lab 15: Evaporation and Intermolecular Attractions

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Evaporation and Intermolecular Attractions Introduction: The purpose of this lab was to observe how different intermolecular forces and molar masses have an impact on evaporation of different molecules. We tested this by using several different samples on temperature probes and seeing how the temperature changed over a 4 minute period. Each sample had a difference in either molar mass or intermolecular force. Pre-Lab Table: Data: Conclusion/Questions: Overall, this lab was fairly successful because we were able to quickly complete the procedure with clear results. We didn't really have any challenges or problems during our lab and everything was fairly straight forward. 2.    Explain the differences in the difference in temperature of these substances as they evaporated. Explain your results in terms of intermolecular forces. The differences of the 5 substances varied quite a bit but they were almost all decreasing except for glyceri...
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Lab 14: Ester Synthesis

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Ester Synthesis Introduction: The purpose of this lab was to complete a synthesis reaction by combining different acids with alcohol. This will create different molecules containing the functional group ester which is a sweeter smelling group. Basically, we a changing a putrid smelling mixture into a sweeter, more pleasing mixture by changing its molecular structure through combining and heating of substances. Data: Test Tube I (Isopentyl alcohol, glacial acetic acid, concentrated sulfuric acid) Test Tube E: (Ethyl alcohol,  glacial acetic acid, concentrated sulfuric acid) Test Tube M: (Salicylic acid, methyl alcohol, glacial acetic acid, concentrated sulfuric acid)                   Test Tube          Smell of Mixture before Heating:                             ...
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Lab 12: Electron Configuration Battleship

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Electron Configuration Battleship Introduction: The purpose of this lab was to practice naming elements by their electron configuration, instead of their actual name. My lab partner and I placed "ships" on two periodic tables without showing each other and tried to guess their location by just stating their electron configuration. This also helped us understand the organization of the periodic table.                    Conclusion: Overall, this was a very fun activity and really helped me remember the way things are arranged on the periodic table. The biggest challenge during this activity was naming the elements in the seventh period and far right groups/columns because it was very tedious trying to name the different elements on that section of the table. These were more difficult because they had the most energy levels. The main thing I did learn through this lab was how the periodic table is really arranged an...
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Lab 11: Flame Test Lab

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Flame Test Lab Introduction/Pre-Lab: The purpose of this lab was to observe the effect of certain compounds and more specifically elements in the compounds being burned. Basically, this means trying to find patterns of the flame color when different elements are burned. This was done by putting several known solutions on different wooden splints and putting them over a fire to see the change in color. Then, to test our ability of identifying the compound, we were given two unknown solutions and by observing the flame color when burned, we attempted to predict what compound it really was. 1.    What is the difference between ground state and an excited state? The difference between ground state and excited state is the energy levels. When an element's electrons are at their lowest energy levels available, it is known as the ground state. When an element's electrons absorb some form of energy, their energy levels raise causing the element to be at its excited state ...
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