What subatomic particle changes in an isotope?

Answer 1

I'm assuming that by "change" you mean alter the quantity thereof. If you want to actually change a proton into a nuetron and eject a positron, that requires a nuclear reaction.

The protons and neutrons are in the nucleus and serve to define the atom, while the electrons orbit the nucleus and ultimately determine the atom's charge. Electrons can be removed or added with a certain amount of energy. This energy is relatively small compared to the massive amounts required to alter the subatomic particles within the nucleus.

Answer 2

If you are asking how elements differ in properties:

The difference in protons (and their assumed number of electrons) and neutrons changes the type of element. Different elements have different properties. It is believed that the change in protons affects the properties between elements.

If you are asking how the same element can have different properties:

They do not. Every element has the same properties as another of the same element. For example: an oxygen element will have the same properties as an oxygen element 1 cm away, 1 foot away, or 1 mile away (or more).

EDIT: Atoms, elements, and atomic theory are debatable and constantly changing subjects. It is hard to give a direct answer on atom-related questions because it is all theory.

Answer 3

Protons-Positive Charge

Electrons-Negitave Charge

Nuetrons-Nuetral Charge

Answer 4

The number of neutrons is different for each isotope.

Answer 5

This particle is the electron.