Atoms can only change in the number of electrons in their 'shells'. That's actually the way they can react with each other. When reacting, their properties will change a lot.
However, if the number of protons or neutrons changes that atom is not of the same element; this will only take place in NUCLEAR reactions, not in 'normal' chemical ones.
True
False
false
false
false
False, iron atoms are converted to iron oxide
True.
True
false. atoms can either be fused or defused in all chemical reaction.
False. Number of neutrons.
FALSE. It is in fact the other way around. A molecule consists of two atoms or more kept together by chemical bonds.
true?