{"id":3179,"date":"2014-06-01T18:15:14","date_gmt":"2014-06-01T18:15:14","guid":{"rendered":"http:\/\/stgabrielsns.ie\/?p=3179"},"modified":"2014-06-01T18:15:14","modified_gmt":"2014-06-01T18:15:14","slug":"science-experiment-copper-caper","status":"publish","type":"post","link":"https:\/\/stgabrielsns.ie\/?p=3179","title":{"rendered":"Science Experiment – Copper Caper"},"content":{"rendered":"
In Senior Infants we did a science experiement called Copper Caper where we used vinegar and salt to clean dirty copper coins.<\/h5>\n
We poured a quarter of a cup of vinegar into a plastic tub and added a teaspoon of salt to it, stirring it well until the salt had dissolved.<\/h5>\n
Next we put our dirty coins into the mixture and straight away we noticed that they were cleaner. After a few minutes we took the coins out and rinsed half of them with water. We left the other half unrinsed on kitchen towel. After a few minutes we noticed that the unrinsed coins were looking dirty again turning a blue-green colour, while the rinsed coins were still shiny and clean.<\/h5>\n
Next we put some new and shiny nails and a screw into the mixture. After a few minutes the nails were starting to change to a brown colour while the screw had bubbles coming out if it. The screw eventually turned black.<\/h5>\n
Why did all of this happen?\u00a0<\/strong><\/h5>\n
Lots of chemical reactions happened during our experiment between the metals in the coins, nails and screw, the salt\/vinegar mixture and oxygen from the air.
\n<\/strong><\/h5>\n
The salt and vinegar mixture is an which cleaned the dirt off the coins.<\/h5>\n
The unrinsed coins turned a blue\/green colour because the copper in the coins mixed with oxygen from the air and chlorine from the salt.<\/h5>\n\n\t\t