2007-07-09 17:36:56 · 3 answers · asked by Otep 1 in Science & Mathematics ➔ Physics
Anti-matter is a kind of matter that is made up of subatomic particles that are the opposite, or antiparticles, of normal matter.
For instance, there is antihelium. Normal helium is made up of two protons, two neutrons, and two electrons.
Antihelium is made up of two antiprotons, two antineutrons, and two positrons.
It all has to do with quarks. A proton is made up of two up quarks and one down quark. An antiproton is made up of two up antiquarks and one down antiquark.
2007-07-09 17:44:52 · answer #1 · answered by Brian L 7 · 0⤊ 1⤋
Anti-matter are particles that behave opposite to the regular behavior of particles. An example is the positive-charged electron, which in some nuclear decay, is ejected from the nucleus. When the anti-matter and matter meet, they annihilate each other, converting their masses to energy.
2007-07-10 00:56:26 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋
Anti-matter is *exactly* the same as matter except it has an opposite electrical charge. For instance, the electron has a negative electrical charge while its anti-matter twin (..the positron..) has a positive electrical charge.
2007-07-10 01:11:42 · answer #3 · answered by Chug-a-Lug 7 · 0⤊ 0⤋