What subatomic particles could be changed without changing which element the atom is? i. electron ii. proton iii. neutron?

The correct answer is option iii. neutron

Explanation:

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Atoms are made up of electrons, protons, and neutrons.

The electrons are negatively charged. Protons are positively charged. Neutrons have no charge.

The protons and neutrons are in the nucleus.

In this case, the answer is neutrons since, since they do not have a charge, changing their number will not affect either the charge or the atomic number of the atom.

We conclude that the correct answer is option iii. neutron

the volume increases

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.