How do you know if a particle is an electron/proton?

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To determine if a particle is an electron or a proton, measuring its charge or mass is essential. Protons move in the direction of electric field lines, while electrons move in the opposite direction when subjected to an electric field. The right-hand rule can be applied in magnetic fields to differentiate between the two. Additionally, protons have a positive charge and greater mass compared to electrons, which have a negative charge. These methods provide clear identification of the particles in question.
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im sure its a simple question but i don't know thanks
 
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If you know it's either a proton or an electron (but no other kind of particle), then all you need to do is measure its charge, or its mass.

- Warren
 
Hmm.. as a real life experiment?

Magnetic fields and electric fields can do this very easily.

If you apply an electric field, a proton will go in the direction of electric field lines, and an electron will go the reverse.

Magnetic fields: right hand rule.

Otherwise, chroot is right. Electrons have negative charge. Protons have positive. A proton weighs more than an electron.
 

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