8 terms

7th Unit 1-A Atoms

Atoms
STUDY
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Terms in this set (...)

proton
A particle in the nucleus of an atom that has a positive charge.
neutron
A particle in the nucleus of an atom that has a neutral charge or no charge.
electron
A tiny particle that moves around the nucleus of an atom and has a negative charge.
atomic number
A number that identifies each element and is the number of protons in an atom of that element.
atomic symbol
A one or two letter abbreviation for an element
atomic mass
The approximate total mass of an atom.
atomic charge
the charge of an atom due to its protons and electrons.
periodic table
A table that shows the elements, their atomic number, symbol, and atomic mass; elements with similar chemical properties are grouped together.