True or false
the nucleus of an atom does not change when the atom undergoes a chemical reaction.
true or false
an atom does not react with other atoms if it has the same number of protons as it has electrons.
true or false
all of an atom's electrons can interact with the electrons of other atoms to form bonds.

Well I'm not sure about the first one, however the 2nd one is false, an atom can still react with other atoms if it has a neutral charge. and the third one is false, because only the electrons on the furthest out ring can react with other atoms, these electrons are called valence electrons, and the ones on more inside rings are full so they cannot be bonded with other atoms

Acovalent bond is formed between the two hydrogen bonds