Smallest particle of matter

negatively charged particle

where you will find an electron

neutral charged particle, found in the nucleus

center of atom, positive charge, most of mass is here

positive charged particle, found in nucleus

number of protons in an element, the whole number on the periodic table

average mass of an element’s isotopes

charged atom formed by gaining OR losing electrons

same element, different mass = different # of neutrons.

number of protons+neutrons in an element. the number that has decimals on the periodic table

process that occurs when an unstable atomic nucleus changes into another more stable nucleus by emitting radiation

describes elements that spontaneously emit radiation

an atom with a positive charged, formed by LOSING an ELECTRON

an atom with a NEGATIVE charge, formed by gaining an electron

what particle do we change if we want to make a new element?

which of these sub-atomic particles is NOT in the nucleus?

What is the overall charge of an element?

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