Faiz are you there. here I am iswarya​

What happens to the composition of an atom to cause it to become positively or negatively charged?

If i got an 1040 on my psat, what are the chances of being able to get a 1400 on the sat. and are there any recommended ways to study.

Iknow this isn't a question, but is there someway to ask a question under public safety or is there no category for it? i don't know if i'm overlooking it or not.