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unit 4
science
| Term | Definition |
|---|---|
| Atomic | Mass average mass of one atom of an element |
| Periodic Table Of Elements | achart where all elements are organized into periods and groups according to their propertes |
| chemica symbol | one or two letter code that stands for an element of the elements name which maybe english latin or greek in origin |
| Period | A row of elements in the periodic table arranged by atomic number |
| Group | column of elements periodic table in which elements have certain proertes in commn also called chemical family |
| Matter | The matter that all objects and substances are made of any thing that has mass and takes up space |
| Elements | Substances that are the building blocks of all matter an element is made up of one kind of atom. |
| Compound | Matter made of two or more elements the elements in a compound are chemically bonded cannot be separated by physical means and a compound from the elements that make it up |
| Atom | Smallest particle into which an element can be deveded and still have the properics of that element. |
| Electron | Negatively charged particle found outside the nucleus of an atom |
| Nuenleus | structure neat the center of acell that contains th |
| Proton | Positively charged particletocated in the nucleus of an atom |
| nuetron | in an atom particle with a neutral charge i located in the nucleus |
| energy level | The amount of energy carried by an electron in an atom determines the electons average distance from the nucleus |
| isotype | atoms of the same element with different numbers of neutrons in the nucleus and thus different atomic masses i for example carbon 12 and carbon 14 |
| mass number | The sum of protons and neutrons in the nucleus of an atom |
| atomic number | number of protons in the nucleus of one atom of an element |
| mutal | a type of symbiosis in which both partners benfit from living together |
| Malleable | A term used to describe material that cam[e |