Question

sometimes, atop gain or lose particles. the loss of which particles results in a change of atomic mass? select all that apply. an electron. a neutron. a proton

Answer 1

The loss of the following particles results in a change of atomic mass:

1. **Neutron**: Losing a neutron will decrease the atomic mass because neutrons contribute to the mass of an atom.

2. **Proton**: Losing a proton will also change the atomic mass, as protons contribute to the overall mass of the atom as well as its atomic number (which defines the element).

**Electron**: The loss of an electron does not change the atomic mass significantly because electrons have a negligible mass compared to protons and neutrons.

So, the correct answers are:
- Neutron
- Proton