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Atomic Structure(20)
Question | Answer |
---|---|
Atom | the smallest part of an element which still has the properties of that element. |
Protons and Neutrons | are found together in the middle of the atom which makes up the nucleus. |
Electrons | tiny electrons spin around the nucleus. |
Atomic number | the number of protons in an atom of an element. |
Mass number | the number of protons and neutrons in an atom of an element. |
Electronic Configuration | number of electrons in each shell. |
Isotopes | atoms that have the same number of protons but different number of neutrons. |
Reactivity | chemical reactions involve the electrons in the outer shells of atoms. Every atom wants to have to have its outer shell completeley full of electrons. |