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Question | Answer |
---|---|
atoms | the smallest unit of matter that has all the properties of matter |
scientific model | an idea that allows us to create explantionof we think |
scientific evdience | the collection of the observations that many people have made |
mass number | number of protons and number of neutrons |
atomic number | number of protons in the nuclues of an atom |
atomic mass | weight or mass of a single atom |