Atoms Molecules and Ions Chemistry.docx - Atoms, Molecules,...

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Atoms, Molecules, and Ions Chemistry1) A molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. This isa statement of ________.A) the law of multiple proportionsB) the law of constant compositionC) the law of conservation of massD) the law of conservation of energyE) none of the aboveAnswer:B
2) Which one of the following is notone of the postulates of Dalton's atomictheory?A
3) Consider the following selected postulates of Dalton's atomic theory:(i)Each element is composed of extremely small particles called atoms.(ii) Atoms are indivisible.(iii)Atoms of a given element are identical.(iv)Atoms of different elements are different and have different properties.Which of the postulates is(are) no longer considered valid?C
4) Which pair of substances could be used to illustrate the law of multipleproportions?B
5) Which statement below correctly describes the responses of alpha, beta, andgamma radiation to an electric field?A) Both beta and gamma are deflected in the same direction, while alpha shows noresponse.B) Both alpha and gamma are deflected in the same direction, while beta shows noresponse.C) Both alpha and beta are deflected in the same direction, while gamma shows noresponse.D) Alpha and beta are deflected in opposite directions, while gamma shows noresponse.E) Only alpha is deflected, while beta and gamma show no response.Answer:D
6) Which one of the following is nottrue concerning cathode rays?E

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Term
Fall
Professor
NoProfessor
Tags
Physical chemistry, Atom, Mole, pH, p2d, P3E, 34S2C

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