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sc 15 vocab words
| Term | Definition |
|---|---|
| model | a representation to show the structure of something |
| atom | the smallest unit of an element. |
| nucleus | the central region |
| electron | negatively charged subatomic particle |
| atomic number | the number of protons in the nucleus of an atom. it is the same for all atoms of an element |
| atomic, nuclear, chemical symbol | A chemical symbol is a 1-, 2-, or 3-letter internationally agreed code for a chemical element, usually derived from the name of the element, often in Latin. |
| subatomic particles | a particle smaller than an atom |
| molecule | the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound. |
| Lewis structures | are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. |
| Bohr model | The simplest modern picture of the structure of the atom |
| electron shell | The electrons in the outermost occupied shell that determine the chemical properties of the atom |
| valence electron | the electron that is found in the outermost she of an atom and that determines the atoms chemical properties |
| matter | anything that occupies space |
| proton | positively charged subatomic particle that is found in the nucleus of an atom |
| neutron | negatively charged subatomic particle that is found in the nucleus of an atom |
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dylanblackett
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