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aj-atoms
Question | Answer |
---|---|
atomic mass | the "weight" of an atom- the same as the mass number |
atom | the smallest unit of a matter |
scientific evidence | collection of observations that many people have made, everyone agrees on the same collection observations |
scientific model | an idea that allow us to create an explanantion of how we think some part of the world works. |
mass number | number of protons and number of neutrons |
atomic number | number of protons in the nucleus of an atom |