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In this chemistry activity, learners use chemical reactions to observe the composition of an alloy. Learners will calculate and record the amount (mass and percentage) of copper and zinc in a penny minted after 1982. Then learners will heat the penny to create a brass alloy. Use this activity to introduce learners to chemical reactions, alloys, and oxidation-reduction reactions. [Activity is publicly available through a web crawler capture on Archive.org.]
- Under 5 minutes
- 30 to 45 minutes
- $5 - $10 per group of students
- Ages 11 - 18
- Activity, Experiment/Lab Activity
- English
Quick Guide
Materials List (per group of students)
- Pennies minted after 1982
- 12M (concentrated) hydrochloric acid or muriatic acid
- 2 150 mL beakers or small jars
- 2 400 mL beakers or large jars
- 6 M NaOH solution
- elemental zinc, granulated
- metal shears
- hot plate
- evaporating dish
- tongs
Subjects
-
Engineering and Technology
-
Engineering
- Metallurgy and Materials Engineering
-
Engineering
-
Mathematics
-
Data Analysis and Probability
- Data Analysis
- Data Collection
-
Data Analysis and Probability
-
Physical Sciences
-
Chemistry
- Chemical Reactions
- Oxidation-Reduction Reactions
-
Structure and Properties of Matter
- Mass and Weight
-
Chemistry
-
The Nature of Science
-
The Scientific Process
- Conducting Investigations
- Gathering Data
- Formulating Explanations
- Communicating Results
-
The Scientific Process
Informal Categories
- Financial Literacy
Audience
To use this activity, learners need to:
- see
- see color
- read
- touch
Learning styles supported:
- Involves hands-on or lab activities
Other
This resource is part of:
Access Rights:
- Free access with registration