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unit 4
science
Term | Definition |
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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 |