30 Copyright 2013, CBSSports.com http://vikings4eva8.blogs.cbssports.com/mcc/blogs/view/10607438 en-us I Title: Cheap,Yet Efficient Single Replacement of Copper Chloride with Aluminium Foil II Hypothesis Whether or not aluminium will replace the copper in this fascinating experiment? III Procedure equipment used: 1. Goggles 2. Beaker 3. lab bench 4. dosage of copper chloride(1/4 of a teaspoon) 5. water 6.thermometer 7.aluminium foil Steps to attempt lab: 1. Make sure all equipment is gathered and is at the ready. 2. Add Copper Chloride to beaker 3. Add water to beaker until 1/3 full 4. Stir the mixture with the thermometer in your hand and observe obscurities 5. Record the temperature by looking at your thermometer 6. Now grab the aluminium foil and loosely crumple with your right hand 7. extend your hand over the beaker and drop the aluminium in it. 8. Record the observations that are to be made 9. Once data is gathered, deposit waste into fume hood. 10. Do this by carefully grabbing the beaker and swishing water in it then demping into fume hood.(Two or Three swishes of water should suffice.) Controls: no specific controls needed. IV Data Qualitative results: 1. Copper Chloride starts as teal color 2. Once stirring is commenced, color turns blue 3. Aluminium foil breaks down and turns to a rusty color 4. Obscene smell erodes from beaker 5. Bubbles emerge from beaker 6. Copper Chloride dissolves completely Quantitative Results: 1. 5.03 seconds for concotion of Copper Chloride to turn blue 2. Water = 22.0 degrees Celcius before stirring 3. Water = 22.5 degrees Celcius after 30.0 seconds stirring 4. Water = 30.00 degrees Celcius 1.00 minute into stirring 5. Water peaks at 34.0 degrees Celcius after 2.00 minutes 6. Water declines from then on at average of 3.60 degrees per half minute Chart Form Consistency: Data is consistent to 3 significant figures, minor mistakes may have been made pending the naked eye V Analysis/Calculations Yes, correct units were devised during experiment. Significant figures = check Percent Error = (.01-.005)/.01 times 100 = .005 or 1/200 of a percent error VI Conclusion Aluminium effectively replaces Copper in this single replacement lab. Evidence of this is garnered through the qualitative data. The naked eye reveals the copper chloride dissolving. The aluminium then turns a rusty red, confirming the replacement. Further evidence of this occurs with more qualitative data. The bubbling is significant to the experiment signaling change. Because there is a color and temperature change, a reaction must have taken place. With these signs, the hypothesis is proven and the goal of the lab is accomplished. Some suggestion for improvement would be to alter the amounts of copper chloride or aluminium for optimal reaction. One would also come to the realization that the aluminium must be stronger than the copper, if it is to take the place of it. A fun thing to do to prove this would be to then repeat the lab, but start with aluminium chloride instead of copper chloride. Error may have been made, but results are as precise as can be. Error may have been made by reading the temperature on the thermometer wrong, or not paying attention to the clock. A very memorable lab, make sure you wear your safety goggles, and enjoy mixing chemicals! Tue, 18 Jun 2013 18:51:38 EST http://vikings4eva8.blogs.cbssports.com/mcc/blogs/entry/10607438/12197436?source=rss_blogs_Auto Racing#comments Auto Racing http://vikings4eva8.blogs.cbssports.com/mcc/blogs/entry/10607438/12197436?source=rss_blogs_Auto Racing Going along with what other people are doing is conformity. So when Brian, the nerdy kid that is pretty much crying about seeing <p></p>the bag of ganja that Bender has, decides to smoke it with him, is really ironic and conforming. Of course he just wants to do what the rest of the group <p></p>is doing, which is a perfect example of conformity. <p></p> The Breakfast club is a movie that has lots of examples of conformity in it, some hidden and some very obvious. When Andy is talking about all the pressure by his parents for him to excel in sports and be the best kid ever is a prime example. Claire has to listen to her friends in order for her to maintain her status, and the other girl Allison has to lie to get attention on herself because nobody cares about her. They each are in their own clique, and conform to how the clique would work. They even tell each other that if faced with seeing each other at school, that they would not talk to each other and they would just blow each other off. It is really unique how much people do anything just to fit in with the group. Another example is when Claire finally makes Allison look pretty good looking. Allison goes along with it because Claire is so popular and she is like the most popular girl in school. One more example is when Brian decides to do all the homework for the rest of the delinquents. It is because he is the smartest one of the group, so he believes in his brain that it is his natural right to write the paper. Wed, 03 Feb 2010 8:09:32 EST http://vikings4eva8.blogs.cbssports.com/mcc/blogs/entry/10607438/12197436?source=rss_blogs_Auto Racing 100 http://sports.cbsimg.net/images/cbsdm/spec/cbssportscom.gif http://vikings4eva8.blogs.cbssports.com/mcc/blogs/view/10607438 100