Download Notes on atomic mass

Atomic Mass
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Protons have a mass of 1 atomic mass unit (amu).
Neutrons have a mass of 1 atomic mass unit (amu).
Electrons have a mass of 1/2000 amu (about 0.0005 amu).
Atomic mass is found by taking the number of protons and
the number of neutrons and adding them together.
Average Atomic Mass: To find the average atomic mass we
take into account all of the actual atoms (with varying
amounts of neutrons) that exist in nature and the
percentage of each type.
Atomic Mass
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Practice: Use the atomic mass to find the number of
protons and neutrons in the atom.