Sub-atomic particles like negatively charged electrons, positively charged protons and electrically neutrons​

neutral

Explanation:

There are three basic subatomic particles. These are;

A neutron has no charge unlike the proton and the electron. It is present in the nucleus and contributes to the mass of the atom.

law of conservation of matter

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.