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science test
for science test in coach parens class
q&a | T&D |
---|---|
atom | the smaliest partical |
matter | the amount of mass in a room |
atomic number | = number of protons |
atomic mass | = number of electrons |
how to find the number of protons,nuetrons&electrons | look at the atomic # & the atomic weight |
chemical bond | a force of attraction |