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From Dull to Dazzling

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Lydia Greenwood

on 25 April 2014

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Transcript of From Dull to Dazzling

Experimental Design
- independent variable:
- dependent variable:
- hypothesis: if
What It's About
The objective is to experiment with the effect of pH on the corrosion of copper using a test solution that contains a chemical that turns deep blue in the presence of copper.
Procedure and Materials
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Using Pennies to Test How pH Affects Copper Corrosion
•Copper/Iron Test Kit
•Test tubes, size 16 mm x 150 mm (4)
•Graduated cylinder, 10 mL volume
•Distilled water; available at most grocery stores (1 gallon)
•Skewers, bamboo or metal, for mixing
•Vinegar, white
•Permanent marker
•Lab notebook
•Plastic cups, 16-ounce (oz.) size (12)
•Pennies, should all be dull and dingy (30) ◦Note: Pennies made before 1982 were 95% copper, whereas pennies made after 1982 are mostly zinc with a thin copper plating. Both kinds will work in this procedure.
•Timer or stopwatch
•Strainer with a handle, small
•Paper towels
•Liquid measuring cup, metric
•Optional: Chemical safety goggles

From Dull to Dazzling
Lydia Greenwood
Period 2
type here
Full transcript