Question

What is Anti-Matter?​

Answer 1

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Antimatter is a material composed of so-called antiparticles. It is believed that every particle we know of has an antimatter companion that is virtually identical to itself, but with the opposite charge. But its antiparticle, called a positron, has the same mass but a positive charge.

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Answer 2

Answer:

Antimatter is a material composed of so-called antiparticles. ... But its antiparticle, called a positron, has the same mass but a positive charge. When a particle and its antiparticle meet, they annihilate each other – disappearing in a burst of light