You take out your best silver spoons and notice that they are very dull and have some black spots, chemical or physical change?

The blackened spots on the spoons are nothing but silver sulfide . Silver sulfide is formed when silver comes in contact with moisture , vapour or sulphur . Since , they have said that some black spots could be seen , we can be sure that the silver has rusted from sulphur as only silver and sulphur can form silver sulfide , which is black in colour . Since there has been a change in the chemical composition of the sliver in the silver spoon ( silver into silver sulfide by sulphur ) we can say that the change that occurred here is a chemical change . Therefore , the dull black spots on the silver spoon are the results of a chemical change .

since electrons are negative the answer is neagtaive