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dunaganvocab
Science vocabulary words for EOQ
Question | Answer |
---|---|
element | a substance that cannot be broken down into a simpler substance by ordinary chemical changes. Consists of atoms of only one type |
proton | a positively charged particle located in an atom’s nucleus |
neutron | a neutral particle located in an atom’s nucleus |
nucleus | the central region of an atom where most of the atom’s mass is found in protons and neutrons |
electron | a negatively charged particle located outside an atom’s nucleus about 2000 times smaller than either a proton or neutron |
atomic number | the total number of protons in an atom’s nucleus |
atomic mass # | the total number of protons and neutrons in an atom’s nucleus |