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Atoms & Elements

Science Grade 7

proton positively charged part of an atom
neutron part of an atom that has no charge
electron negatively charged part of an atom
nucleus center of an atom; contains protons and neutrons
atoms the smallest particle that makes up an element
Latin Some of the elements are named in this language.
atomic number the number of protons in an element's nucleus
chemical symbol usually consists of one or two letters.
atomic mass used to measure the particles in atoms
families Elements in the same ________ have similar characteristics. There are 18 of these on the periodic table.
periods Elements in the same ______ have different properties. There are seven in the periodic table.
Created by: mrsrooney