• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

copper chloride lab

Extracts from this document...


Copper Chloride Lab The copper chloride lab represents the basic concept of chemistry: understanding the properties of a chemical reaction and successfully predicting the outcome of said reaction with the use of good scientific inquiry. This lab uses aluminum and copper chloride to create a chemical reaction that needs to be observed after one day. Then two testable questions are generated, as well as matching hypotheses, resulting in two experiments that are observed and recorded. Then class data is compiled and compared to come to a conclusion. The reaction of combining the aluminum with the copper chloride in conjunction with water resulted in the appearance of a red substance at the bottom of the beaker. Materials: * Beaker with the liquid and red substance * 2 pH strips * Ring stand * Filter paper * 2 Small beakers * Stabilizer to keep filter paper in place * Oven * Iron filings * Scraper or spatula Procedures: Experiment #1: * Dip pH strip in the liquid with the red substance for one minute * Repeat again to reduce percentage of error * Note the color of the ...read more.


20.9� C 24.1� C 29.1� C 31.3� C 5 6 7 8 32.5� C 32.3� C 32.1� C 32.0� C Adding Al - Water becomes darker, begins to bubble, black pieces float in the eater, Al looks burnt, becomes red balls Experiment #1 * The pH strips are yellow-orange in color * After dipping the 1st strip in the liquid for one minute, the color changed to a slightly darker orange, indicting a pH between 4 and 5 Test number #1 #2 pH Between 4 and 5 Between 4 and 5 * After dipping the 2nd strip in the liquid for one minute, the color changed slightly to a darker orange, indicating a pH between 4 and 5 Experiment #2 * 1st day - Separated red substance from liquid, red substance looks grainy, leaves a trail of red particles * 2nd day - Used iron filings to test the hardness of the red substance - Removed the red substance from filter paper, looks fragile, can be compared to hardened sand - Put filings in a pile then tried to crush them with the red substance - Red ...read more.


Rusting naturally would take years instead of hours. Possible errors include not having pure iron filings and the red substance not being completely dry. The experiments done by other groups included testing the red substance's flammability, the liquid's flammability, testing for density, pH, and solubility. The flame test proved that the red substance was a compound of both aluminum and chlorine with additional copper, or copper and aluminum with additional chlorine. However the density tests proved nothing, since none of the densities were similar to each other or the density of the possible compounds. The pH was determined to be around 4 or 5, as all groups who tested pH had very similar results. It can be determined that the red substance is either the compound CuAl + Cl or AlCl + Cu through various stages of scientific inquiry. After narrowing the possibilities by conducting various tests, the products and their exact grouping can only be determined by testing for more chemical and physical properties. Finding the color of the substances for the two groupings as well as the state of matter will ultimately determine the composition of the red substance. Sean Gilman 10/31/07 Chemistry P. 4 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE H.G. Wells section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work