Answer:
Carbon is non metal because it is found in the right side of the periodic table while calcium is metal because it is found in the left side of the periodic table.
Answer: solution has blue color and solution has bright green color.
Explanation:
in its aqueous solution gives blue color solution. Copper being transition metal and gives characteristic color in their in aqueous solution.
in its aqueous solution gives bright green color solution. Nickel is also a transition metal and gives characteristic color in their in aqueous solution.
It is going through the process of decomposition. The solution has weaker bonds than would be necessary to keep it together given the outside conditions, causing the bonds to break and the bubbles are oxygen bubbles escaping the solution.
The 2nd one I believe
Answer- 2nd