The first particle The last particle The only red particle A helium nucleus
Gets bigger Gets heavier Goes down by 2 Goes down by 4
A proton A neutron An electron A radion
A proton An electron A radion A nucleus
Electromagnetic waves Magnetic machines Electric guns Hot lasers
More ionising than an alpha particle Less ionising than a beta particle Less penetrating than an alpha particle Less penetrating than a beta particle
Gets bigger Gets heavier Gets smaller Stays the same