It seems like the answer is C, you really just need to use the process of elimination.
The average kinetic energy of a collection of gas particles depends on the temperature of the gas and nothing else.
I am almost positive that the answer is: Plasmas. Let me know if im right or not please!! :)
I believe you have to label out the positive metal ion and the delocalized electrons. They're the 2 things that makes up a metal structure.
In the diagram, the circles with the + symbol are the positive metal ions, since + represents positive. And the remaining - circles are the delocalized electrons, as electrons are negative.
And for how a metal conducts electricity, since they're delocalized mobile electrons present in any metal structures, they're able to move away from the metal to the positive side of the battery and more electrons can replace their place flowing from the negative side.
