antimatter is matter with an inverse charge, so an antielectron(better known as a positron) has a charge of +1
dear goudon i think:(only supposeing) some laws of physic say:IF ANTIMATTER TOUCHES MATTER IT CREATES AN EXPLOSION LIKE THE BIGBANG(and so that in tpt isn't true!)
antimater isnt anything of thoes its under its own catigory. mater is one thing but smashing it together at near speed of light speeds makes it duplicate itself and make antimater. antimater is just a negative of what gets put in the colider. but TPT dosent have any way to produce liquid solid or gassious antimater so it just sits all alone ;-; anti means to oposite of. so if i have the oposite of a gas would it go through a gas wall?