Term
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Definition
| the smallest particle element |
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Term
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Definition
| a negatively charged particles in an atom |
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Term
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Definition
| the central core of the atom |
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Term
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Definition
| positively charged particles in an atom's nucleus |
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Term
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Definition
| the specific energy an electron has |
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Term
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Definition
| a small particle in the nucleus of the atom with no electrical charge |
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Term
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Definition
| the number of protons in the nucleus of an atom |
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Term
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Definition
| atoms of the same element that have different numbers of neutrons in the nucleus |
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Term
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Definition
| the sum of protons and neutrons in the nucleus of an atom |
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Term
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Definition
| the average mass of all the isotopes of an element |
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Term
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Definition
| an arrangement of elements showing the repeating pattern of their properties |
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Term
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Definition
| horizontal rows by which the periodic table is organized |
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Term
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Definition
| elements in the same vertical column of the periodic table also called a family |
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Term
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Definition
| is a representation of an element usually consisting of one or two letters |
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Term
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Definition
| elements that are good conductors of electric current and heat |
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Term
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Definition
| a term used to describe material that can be pounded into shapes |
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Term
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Definition
| material is one that can be pulled our or drawn inot a long wire |
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Term
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Definition
| the ability of an object to transfer heat |
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Term
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Definition
| the ability of an object to transfer electric current |
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Term
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Definition
| the ease and spead with which a substance reacts with other substances |
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Term
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Definition
| the gradual wearing away of a metal due to a chemical reaction |
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Term
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Definition
| an element in Group 1 of the periodic table |
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Term
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Definition
| elements of Group 2 of the periodic table |
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Term
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Definition
| elements in Group 3 through 12 |
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Term
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Definition
| a mchine that moves atomic nuclei faster and faster until they have reached very high speeds until they crash into one another sometimes forming heavier elements |
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Term
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Definition
| an element that lacks most of the properties of a metal |
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Term
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Definition
| a molecule that consists of two atoms |
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Term
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Definition
| elements in Group 17 of the periodic table |
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Term
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Definition
| the elements in Group 18 of the periodic table |
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Term
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Definition
| have some properties of metals but also have a properties that are typical of nonmetals |
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Term
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Definition
| substances that can only conduct electric current under some conditions |
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Term
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Definition
| the process of when the atomic nuclei of unstable isotopes release fast moving particles and energy |
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Term
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Definition
| the property of being able to spontaneously emit radiation |
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Term
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Definition
| consists of protons and two neutrons and is positively charged |
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Term
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Definition
| a fast moving electron given off a nucleus during radioactice decat |
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Term
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Definition
| a type of nuclear radiation made up high energy waves |
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Term
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Definition
| radioactive isotopes that can be followed through the steps of a chemical reaction or an industrial process |
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