1. Formation of a Copper Mirror
A copper mirror appears on the inside of a test tube when chemicals are mixed
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2. Purpose
To show how to make a copper mirror using hydrazine hydrate and copper (II) acetate.
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SDSMT

3. Demonstration
A large test tube and a 250mL beaker to set the test tube in were the equipment used
Copper (II) acetate was added to the test tube. Hydrazine hydrate was next added to the test tube.
The test tube was rotated slowly while being being heated gently over a micro-Bunsen burner.
After the solution was heated for 1-2 minutes copper metal plated out on the inside of the test tube.
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4. Concepts Organic Compounds Endothermic Reactions Redox Reactions
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5. Inorganic Compounds
Inorganic Compound - Compound that is not carbon-based.
The inorganic compound used in this experiment was hydrazine hydrate (molecular formula is H2NNH2 · x H2O).
Hydrazine hydrate is a reducing agent which means that it loses electron and is oxidized
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SDSMT

6. Endothermic Reactions
Endothermic Reaction - a reaction that absorbs heat from the surroundings.
In this demonstration heat was added to provide enough energy to cause the reaction to occur. A microburner was the heat source.
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SDSMT

7. Redox Reactions Redox Reaction
Oxidation-is the loss of electrons by a substance.
Reduction-is the gain of electrons by a substance.
These happen simultaneously in a redox reaction.
Ca + (s) + 2H+ (aq) —› Ca2+ (aq) + H2 (g)
Ca (s) is oxidized since it loses electrons and 2H+ is reduced since it gains electrons.
In this demonstration the following happens:
Cu2+ + 2e- —› Cu
The Cu2+ is reduced since it gains electrons.
The hydrazine hydrate gives up its electrons and becomes nitrogen gas, N2
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SDSMT

8. Conclusion
A copper mirror was made using hydrazine hydrate and copper (II) acetate
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SDSMT

9. Comments
Hydrazine hydrate has also been used as a rocket fuel because of its ability to convert to nitrogen gas and provide thrust for rockets
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