.Copper Coin Experiment.
1. Clean coin in salt+vingear solution
2. Put 50mL of mLT+ NaOH into a beaker
3. Heat on a bunsen burner un till NEARLY boiling - Stir as heating the take off heat
4. Add a spatula of zinc power
5. Heat lightly or 3min, with a coin in - Stire as heating
6. Take a coin out with tongs
7. Rinse coin under water to remove chunks of zinc.
8. Wave coin in the blue flame using tongs.
Copper + Silver - Gold, Zinc Brass
Zinc + sodium hydroxide - Zinc hydroxide
Alloy=
Copper + Zinc
Once the coin was dropped into the sodium hydroxide and the zinc power it changed the color of the coin to the silver
When heated under the blue flame the color of the coin changed to gold.
No comments:
Post a Comment
Please structure your comments as follows:
Positive - Something done well
Thoughtful - A sentence to let us know you actually read/watched or listened to what they had to say
Helpful - Give some ideas for next time or Ask a question you want to know more about
Note: Only a member of this blog may post a comment.