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