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Describe and state their charges and mass for: ELECTRONS
ELECTRONS are negatively electrically charged and their mass is about 1800x smaller than the one from the proton which we will treat as 0.
Define atomic number and atomic mass and show how to identify them.
To find atomic mass we measure the amount of protons + neutrons To find atomic number we have to know the amount of protons (NEUTRAL ATOMS=NUMBER OF ELECTRONS)
Explain the relationship between protons and electrons in an atom
In atoms the number of protons and electrons are always the same to keep their electric charge neutral.
