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Term | Definition |
---|---|
Atom | the smallest of an element that maintain the properties of that element |
Element | a substance that cannot be separated or down into simpler substances by chemical mean |
Nucleus | in physical science, an atom's central region, which is made up of protons and neutrons |
Neutron | a substance particle that has no charge and that is found in the nucleus of an atom |
Electron | a substance particle that has a negative charge |
Atomic number | the number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element |
Neutral | have no overall charge |
Atomic Mass | the mass of an atom expressed in atomic mass units |
Chemical Symbol | a one- or two- letter code that represents an element |
Protons | a substance particle that has a positive change and that is found in the nucleus of an atom |