Which of the following phase changes are the copper atoms undergoing? freezing
condensation
sublimation
melting

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

If you want to create an electrical current, which situation would produce a solution capable of this

Explanation for basic character?