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Atoms Test
Vocab
Question | Answer |
---|---|
number of protons | atomic number |
mass number of isotopes x decimal form | atomic mass |
atoms who have the same number of protons but a different number of neutrons | isotopes |
positive charge, found in the nucleus, and 1 amu | proton |
negative charge, found in the electron cloud, almost 0 amu, and number of protrons | electron |
no charge, found in the nucleus, and 1 amu | neutron |
shell that can hold up to 2 electrons | "K" shell |
shell that can hold up to 8 electrons | "L" shell |
shell that can hold up to 18 electrons | "M" shell |
SI unit used to express the masses of particles in an atom | atomic mass unit (amu) |
protons plus neutrons | mass number |