what exactly is anti matter?

Answer 1

In particle physics, antimatter is matter that is composed of the antiparticles of those that constitute normal matter. If a particle and its antiparticle come into contact with each other, the two annihilate; that is, they may both be converted into other particles with equal energy in accordance with Einstein's equation E = mc2. This gives rise to high-energy photons (gamma rays) or other particle–antiparticle pairs. The resulting particles are endowed with an amount of kinetic energy equal to the difference between the rest mass of the products of the annihilation and the rest mass of the original particle-antiparticle pair, which is often quite large.

Antimatter is not found naturally on Earth, except very briefly and in vanishingly small quantities (as the result of radioactive decay or cosmic rays). This is because antimatter which came to exist on Earth outside the confines of a suitable physics laboratory would almost instantly meet the ordinary matter that Earth is made of, and be annihilated. Antiparticles and some stable antimatter (such as antihydrogen) can be made in miniscule amounts, but not in enough quantity to do more than test a few of its theoretical properties.

There is considerable speculation both in science and science fiction as to why the observable universe is apparently almost entirely matter, whether other places are almost entirely antimatter instead, and what might be possible if antimatter could be harnessed, but at this time the apparent asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics. Possible processes by which it came about are explored in more detail under baryogenesis.

Answer 2

Matter with the same mass but an opposite electrical charge than normal matter. For example, an electron has a negative charge, but the anti-electron has a positive charge. A proton has a positive charge but an anti-proton has a negative charge. Atoms made up protons and electrons are matter. Atoms made up of anti-protons and anti-electrons are antimatter. Small numbers of anti particles have been made in some physics labs, but it quickly reacts with matter to change all the mass to energy.

Answer 3

Antimatter is matter that has the same gravitational properties as ordinary matter, but that has an opposite electric charge as well as opposite nuclear force charges. A positron for example is the antimatter counterpart to an electron. The use of antimatter as a source for fuel is possible because it will annihilate when it comes into contact with an oppositely charged particle, the only obstacle we now face is containing the antimatter safely and harvesting usable amounts of antimatter in particle accelerators. Antimatter does, however exist.

Answer 4

It's exactly the opposite of matter. Antimatter protons are negatively charged ... their electrons positively charged. Every known particle has a correlating anti-particle except when they are neutrally charged particles such as photons.

It is real and is used in medical imaging devices (albeit in small quantities). However, much is still unknown about anti-particles.

Answer 5

anti matter is real an has been produced in small quantities, it is matter that all physical charges in the atomic structure are negative, so when it come into contact with positive matter, or normal matter as we know it,it explodes.

Answer 6

1. A hypothetical form of matter that is identical to physical matter except that its atoms are composed of antielectrons, antiprotons, and antineutrons 2. Matter consisting of elementary particles that are the antiparticles of those making up normal matter. Glad I could help!

Answer 7

In other words, the opposite of matter.

Answer 8

Nonexistant.