Mrs Sager Pickle Lab Answers

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Ryan Taber Mrs. Sager March, 6, 2012 Chem. Honors Adendum #1 Classification metal/nonmetal, penny in HCL, Identity of gas, Identify unknown beads, pickle. * Prior Knowledge to performing this lab: In order to perform this lab our group needed to know a few basic terms before we could start. The most important part of all these labs which I have grouped into one addendum is electrons. Electrons (e-) are subatomic particles; electrons have a neglible mass and are negatively charged. Electrons are located outside of the nucleus and fly around the nucleus at high-speed following no path or pattern. Other important terms that were necessary to know before completing this lab were the oxidation state, number and what an oxidation agent was.…show more content…
Drop one metal ball into the graduated cylinder 3. Record the increase of milliliters inside of the graduated cylinder 4. Find the density of the small metal ball 5. Using the density check the reference table for elements with a similar density *(be sure to rule out rare elements and highly unstable and unobtainable elements) * Procedure: Pickle lab 1. Watch as Mrs. Sager wheels the fume hood over to the center of the class room 2. Watch as Mrs. Sager turns it on 3. Watch as Mrs. Sager stabs a pickle with to metal wires 4. Watch as Mrs. Sager turns on the electrical cords 5. Watch as the pickle burns yellow and sparks * Observations: Classification of metal/nonmetal 1. The charcoal did not conduct electricity at all even after the HCL was placed on it 2. The small metal balls did not all conduct electricity but after a drop of HCL was placed on it, the metal ball then conducted electricity 3. The metal file conducted electricity 4. The HCL did not conduct electricity * Observations: Penny in HCL 1. The Penny was a light shiny copper color at the beginning of the test 2. The Penny created small bubbles all along the surface of the penny and more intensely where the penny side was…show more content…
These electrons are located in the outermost electron cloud, since metals have a very low electro negativity their electrons flow freely about. Since these electrons are floating freely about and since there are so few of them there is plenty of space, these same electrons move farther and farther away from the nucleus making the attraction between the electrons and protons very weak. As a result of this the electrons move into a “sea of electrons”. Metals low affinity for their electrons is the reason why many metals lose their electrons during chemical reactions to elements with higher oxidation states and a greater need for electrons. The reason that the HCL was able to dissolve the copper penny was because the HCL had a higher affinity for electrons then the copper did. When the HCl stole the copper electrons the penny melted. This is also the reason why the aluminum balls melted when dropped in the test tube filled with HCL. This chemical reaction between the aluminums oxide coating and the HCL will create Hydrogen as a bi-product. We knew that the gas was hydrogen because of the loud pooping sound that hydrogen created when it came in contact with the match. The reason for this reaction is because when hydrogen is mixed with an oxidizer such as oxygen it will make the hydrogen highly reactant. Hydrogen in its most pure form will not

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