Inge and Magne are on fire over today's episode where they precipitate metallic copper.
NB! Experiments must always follow the safety rules that apply to laboratory experiments. Remember safety goggles.
You need:
- Beaker
- Copper sulphate
- 100 ml hydrochloric acid, 6 molar
- Aluminum foil
- Lighter
Recipe:
- Pour 100 ml of dilute hydrochloric acid into a beaker
- Take a spatula with copper sulphate and dissolve it in the hydrochloric acid
- Fold a piece of aluminum foil that's long enough and place it in the hydrochloric acid solution
- Ignite the aluminum foil when it begins to bubble and develop a gas
- It will now burn with a cool blue flame!
The solution fizz and boils, and you have now precipitated metallic copper in the solution. This is called a red-ox reaction, a chemical reaction in which one substance is reduced and another is oxidized.
About UiS Christmas Calendar 2021:
The Joule calendar is made by Inge Christ, head of The School Laboratory of Science at UiS, and UiS professor Magne Sydnes. For the seventh year in a row, they make a Christmas calendar with chemistry and physics experiments, popular amongst both young and old. This year there is so much energy in circulation that the Christmas calendar was renamed " The Joule calendar". Joule" is one of several units for measuring energy and is pronounced “jul” in Norwegian. With “jul” being the Norwegian word for Christmas, “joule calendar” makes up a fun pun!
This year’s calendar includes a mixture of experiments that can be done at home without the risk of blowing up the house as well as experiments that should only be performed in a lab while taking the necessary precaution.
