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Term | Definition |
---|---|
Metal | Left of stair step line. conduct well shiny lose electron in chemical reactions |
non metal | right of stair step gains electrons in cmic. reac. |
metaloids | borders stair step poor conductors |
periodic table | table that sets an organized example of all elements |
proton | posi. 1 amu |
neutron | neutral subatomic 1 amu |
electron | negative 0 amu outside nucleus |
atomic symbol | first letter capital always Other letters are lowercased. |