Question

Will MEdal!!
Which of the followng objects is considered negatively charged?
A - one with excess electrons on the surface
b - one with excess neutrons on the inside
c - one with excess protons on the inside
d - one with excess protons on the surface

Answer 1

The answer should be:
A. One with excess electrons on the surface.
While I am confident in my answer, you might want to wait and see if others come up with the same answer. Like any human, I could have made a mistake. Make sure to bump up your question regularly so that others could see it. If you are in a hurry, then you could stick with my answer. Let me know if you have any questions. :D

Answer 2

I am now even more confident in my answer. :)

Answer 3

Let's see what it means for an object to become charged.. what do we know about charged objects? Well, we know that objects are made from the basic building block - the atom. How does an atom become charged? When an atom loses an electron, it is said to be positively charged. Why? We know that atoms contain an equal number of electrons as protons. So let's take Lithium for example. Li has 3+ charges (protons) and 3- charges (electrons). When an electron is taken away, then we have 2- charges but we still have 3+ charges! Therefore, our total charge has become +1! Positively charged! The exactly opposite happens when we add an electron.

On a much broader scale, objects become negatively charged when a lot of electrons have been transferred to that object.

Given all this information, what do you think the answer should be?