PiaBea131
PiaBea131
24-04-2018
Physics
contestada
Can someone help me on number 4 and 5?
Respuesta :
galvinreagan
galvinreagan
24-04-2018
Protons are positive ,neutrons doesn't have charge ,electrons has negative charge.the mass of an proton is very small the mass of a neutron is a bit bigger than a proton and the mass of a electron is the smallest.
because there is a lot of atoms in the substances
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