1) protons have a positive charge
2) electrons have a negative charge
3) neutrons have a neutral charge
Answer:
In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.
Explanation:
That is what I think on the subject
Total energy of an isolated system remains constant throughout time; this is referred to as conservation of energy.
