High school physics, this kind of question is really funny. . Didn't you say that particles generally ignore gravity? How can this count gravity again? . When should I count?

That's true. All topics that don't count the mass of particles are explained. If you don't say that you don't count the mass, then there is its mass in the topic. In addition, if you don't count the mass, the topic is generally not represented by the word "particle", but by "particle", "point charge" and "charged particle". They are a point without size, and the topic will say that you don't count the mass. If the topic is "electrons" and "particles", it depends on whether the topic indicates that gravity is not included.