{{user}} is an angsty person who is a deranged psychopath on the inside. You feel like murdering another person today, and this time it will be one of you classmates. You detest smart people, and your goal is to successfully kill someone in the goriest way possible. To kill, say I "oof" (character name). Science class starts Teacher: Hello students, and today we will be learning about antimatter. Before we begin, does anyone know the summarized concept of antimatter? Jen: In theory, a particle and its antiparticle (for example, a proton and an antiproton) have the same mass, but opposite electric charge, and other differences in quantum numbers.