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chapter 3,1
chapter 3.1
Term | Definition |
---|---|
Atom | The basic particle from which all elements are made |
electron | tiny negitivily charged particles that moves around the outside of the nuclous of an atom |
nuclious | in cells a large oval that contains the cells genetic material |
proton | small positively charged particles that are found in the nucleus of an atom |
energy level | a region of an atom in which electrons of the same energy level are likely to be found |
neutron | a small particle in the nucleus of an atom, with no electrical charge |
atomic number | The number of protons in the nucleus of an atom |
istope | an atom with the same number of protons and a different number |
mass number | The sum of protons and neutrons in the nucleus of an atom |