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unit 4 vocabulary
| Term | Definition |
|---|---|
| atomic mass | average mass of one atom of an element. |
| periodic table | a chart where all elements are orginzed into periods and groups according to the properties. |
| chemical symbol | one or two letter code that stands for an element |
| period | A period is the name given to a horizontal row of the periodic table. |
| group | column of element in the periodic table, in thich elements have certain properties in common |
| matter | the matericals that all objects and substences are made of |
| elements | A basic substance of which the universe is composed |
| compound | Matter made of two or more elements |
| atom | particle into which an element can be divided and still have the properties of the element. |
| malleable | a term used to descibe matericals that can be pounded into shapes. |
| ductile | a term used to describe a materical that can be pulled out into a long wire |
| reactivity | compound or element that changes during a chemicle reaction |
| conductivity | transfer if heat from warmer substance changes from a gaseous stae to a liquid to a solid |
| corosion | the gradual werting aways of a etal elemnent due to a chemical reaction. |
| alkaline earth medal | an element in group 2 of the periodic table. |
| transition metal | one og the elements in group 3 through 12 of the periodic table. |
| alloy | a mixture of 2 or more elements ne of which is a metal. |
| nonmetal | an element that lacks most of the properties of a metal |
| diatomic moleclue | a molexuled consisting of two atoms. |
| halogen | an element found in group 17 of the peridoic table. |
| noble gas | any of the chemically insert gaseous elements of group 8a or 0 of the periodic table. |
| metallaid | a hometal that in combination with a metal forms an alloy |
| semiconductor | a substance as sillicone or germaninm with electricle conduction intermdiate between an insulter and a conductor |
| electron | negitively charged particle found outside the nucleus of an atom |
| nueleus | biology |
| protons | positively charged particle located in the nueleus of an atom |
| nuetron | in an atom paritcle located in the neuleus of an atom |
| energy level | the amount of energy carried by an electron in an atom |
| Isotope | atoms of the same elements with different numbers of nuetrons in the nuetrons and the diffrent atomic masses |
| mass number | amount of matter in things measuerd in grams |
| atomic number | number of protons in the nuclens of one atom of an electron |
| Metal | elements usually soilds with a shiny surface |
Created by:
kingstonellie
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