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| Term | Definition |
|---|---|
| Atom | smallest unit of a element that maintains the property's |
| Element | a substance that is is own substance |
| Nucleus | in physical science an atom central region which is made up of protons |
| proton | a subatomic particle that has a positive charsend |
| neutron | a subatomic particles no charges that is sound in found in a nuclease |
| Electron | a subatomic particle that has a negative change |
| Atomic number | the number that shows on the periodic table of how many atoms are in the the periods |
| neutral | having no overall change |
| atomic mass | the mass of the elements tru atoms |
| chemical symbol | one or two letter code the represents an element |