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S8P1.a

describe the difference between pujre substance

TermDefinition
atom the small unit of an element that maintains the properties of that element
element a substance that can't be separated or broken down into simpler substances by chemical means
nucleus in physical science, an atom's central region, which is made up of protons and neutrons
proton a subatomic particle that has a positive charge and that is found in the nucleus of an atom
neutron a subatomic particle that has no charge and that is found in the nucleus of an atom
electron a subatomic particle that has no charge
atomic # the number of protons in the nucleus of an atom which determines the chemical properties of an element and its place in the periodic table
nuetral have no overall change
atomic mass the mass of an atom expressed in atomic mass unit.
chemical symbol is a code for a chemical element. It is usually derived from the name of the element, often in Latin.
Created by: 09marpin
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