Blue Pennies from a Tarnish Reaction

Blue Pennies from a Tarnish Reaction
Blue Pennies from a Tarnish Reaction
Blue Pennies from a Tarnish Reaction
Blue Pennies from a Tarnish Reaction
Blue Pennies from a Tarnish Reaction
Blue Pennies from a Tarnish Reaction
Blue Pennies from a Tarnish Reaction
Blue Pennies from a Tarnish Reaction
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1 MB|4 pages
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Product Description
The formation of tarnish is an excellent example of a chemical reaction between a gas and a solid. In this colorful activity, atmospheric oxygen reacts with the copper atoms on post and pre-1982 pennies to produce a blue-green tarnish that is called malachite. The activity is easy to run, all you need are a few rolls of pennies. Students can discover that pennies made before 1982 produce more blue tarnish that pennies made after 1982.

The materials, procedure and result table are provided for students to cut and paste into their notebooks. The recipe for the solution is provided as are handy document camera images of attractive malachite ores, polished gems and jewelry. Simply print and use. There is also an observation page for students to discuss their results.

Other Chemical Reaction Resources
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All of these resources are found together in a Chemical Reactions Unit Bundle. You save 20% on this resource and all the resources listed above by purchasing this bundle.
Chemical Reaction Unit
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For those interested in just Chemistry units (no Physics topics) this resource is also found in a full Chemistry Bundle.
Full Chemistry Bundle
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Finally, this resource is part of a Full Year Physical Science Curriculum that includes both chemistry and physics topics. You save 25% on this and every other resource in this best-value comprehensive bundle.

Full-Year Physical Science Curriculum

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Copyright © DrDavesScience. All rights reserved by author, including copyrighted images. This product is strictly for individual use and may not be copied for other teachers. The file may not be edited or modified in any way and may not be uploaded onto any file sharing platform unless mulitple licenses have been applied. All rights conferred by the Digital Millennium Copyright Act (DMCA).
Total Pages
4 pages
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