Copper powder lab?!?
We heated purified copper powder in a crucible over a hot plate (while continuosly stirring) the result, the powder turned black.
What can be the purpose of this experiment? Is this correct: To determine whether there is a chemical reaction when Copper powder is heated?
2007-09-28 13:02:12 · 1 answers · asked by double_drago 3 in Science & Mathematics ➔ Other - Science
First you have to determine whether there was a chemical change and if so what it was. If the copper was pure, nothing was driven off by the heating. (reasonable?) Since there was a change of color it is certainly a reasonable inference that a change took place, but what?
You might want to try repeating the experiment with some changes. For example, try heating the copper powder in a closed glass tube which has been flushed with dry nitrogen or CO2. You will probably not see the same change.
29 SEPT 07, 0337 hrs, GMT.
2007-09-28 15:33:39 · answer #1 · answered by cdf-rom 7 · 1⤊ 0⤋