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chemistry ch5 test
| Question | Answer |
|---|---|
| what is the only metal that is a liquid at room temperature? | mercury |
| what name is given to groups 3-12 (b-group) elements? | transition metals |
| it is the lightest and most abundant element in the universe, is extremely flammabel in air, and is used in the inductrial production of ammonia | hydrogen |
| which element is alone in its own family? | hydrogen |
| a sample of an unidentified element has a brighter luster, conducts electricity well, and is highly reactive. it is most likely | alkali metals |
| copper, nickel, zinc, platinum, mercury, calcilum, and potassium are all examples of | transition metals |
| what is the large group of elements that have their highest energy electrons in interior d sublevels? | transition metals |
| the lanthanide and actinide series together compose what grouping on the periodic table? | inner transition metals |
| boron, silicon, arsenic, germanium, antimony, tellurium, and astatine are all examples of | metalloids |
| all the metals in the p block of the periodic table are called | post transition metals |
| semiconductors can also be called | metalloids |
| upon what element are the fields of biochemistry and organic chemistry based? | carbon |
| existing as diatomic modules, this gas is tasteless, colorless, and oderless, and it accouints for approximatelyu 78% of the earth's atmosphere. | nitrogen |
| oxygen, nitrogen, carbon, and sulfer are all | halogens |
| this element constutues 21% of the earth's atmosphere and is the most abundant element in the eearth's crust. it is essential for life in all animals and humans | oxygen |
| which nonmetal element is referred to as brimstone in the bible and exists in a variety of forms, including a brittle, yellow, crystalline solid in its native form? | sulfur |
| the halogens form ____________ when they combine with metals and _______________ when they combine with hydrogen. | salts/ acids |
| a sample of unidentified elemetn forms diatomic molecules, is highly reactive, and has a high electrongativity. it is most likely a _________ | chlorine |
| a sample of an unidentified element forms diatomic molecules, is highly reactive, and has a high electronegative | halogen |
| helium, neon, argon, kypton, xenon, and radon are all ______ | noble gasses |
| who arranged a number of the elements in triads on the basis of similar properties? | johann dobereiner |
| what chemist arranged the elements according to increasing atomic masses and therby discovered the relationship he called the law of octaves? | john newlands |
| mendeleev's periodic table arranged elements by | atomic mass |
| whose work resulted in the revision of the periodic law and the atomic number being used as the organizing factor for the elements of the periodic table? | henry moseley |
| elements with atomic numbers greater than that of uranium are called _________ elements | transuranium |
| what is typically not found in a cell on the perioidic table? | electronegativity |
| why do elements in the same family have similar physical and chemical properties? | similar electrical charges |
| in general, where are the nonmetals located in the periodic table? | the far right side |
| the elements immediately adjacent to the stair-step line are the | metalloids |
| casium is the lower left section of the periodic table, and helium is in the upper right. which has the larger atomic radius? | cesium |
| how does the size of a metal atom compare to its cation? | the atom is larger |
| which property measures the energy required to remove an outermost electron? | ionization energy |
| which property measures the energy released when an electron joins an atom? | electron affinity |
| this nobel prize-winning chemist devised an electronegativity scale. | pauling |
| which property measures the attraction of bonded atoms to electrons? | electronegativity |
| what branch of chemistry studies the elements and the compounds they form | descriptive |
| which elemtn is alone in its own family? | hydrogen |
| what nely discovered form of energy did henry moseley use to determine the atomic numbers of elements | x-rays |
| what periodic trend plays a central role in predicting which atoms chemically combine with each other | electron affinity |
| what does the + sign mean on an atom? | it lost an electron |
| what does the - sign mean on an atom? | it gained an electron |
Created by:
brpa8501
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