Your question is a bit vague. An atom can gain/lose electrons to become an ion. Some unstabe atoms can be broken apart (fission) by neutron bombardment or radioactive decay. Some atoms can also be combined to form heavier elements (fusion).
It's Okay.
+2 or -2? Either way, nothing special happens.
An atom can gain, lose, or share.
It loses an electron
An atom gains a negative charge by gaining extra electrons. When this happens, the atom becomes an ion. The number of protons in the nucleus remains the same, but the number of electrons increases, leading to an overall negative charge.
Nothing. Melting is a physical change and does not alter the chemical composition of a substance.
When an atom loses a proton it is normally because it has collided with a neutron or another atom. It would change the element from Carbon to Boron. Hope this helps, i may not be entirely accurate ive only just begun studying this at A level.
Atoms make everything so they are all combined.
Several different outcomes can occur to reacting substances in chemical reactions. An atom will typically either lose or gain electrons, which will make it negatively or positively charged.
Oxidation is a chemial reaction; the atom and the number of neutrons remains unchanged.
A neutral atom of a chemical element has a constant number of protons and electrons; loss or gain of electrons transform this atom in an ion.After the change of the number of protons the identity of the atom is lost.
Introducing energy to an atom will make atoms happy. They will move around until they change their original composition entirely.