test2tro - Practise Exam Chapter 2 1. Which one of the...

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Practise Exam Chapter 2 1. Which one of the following contributes to the charge but does NOT contribute significantly to the mass of an atom? A) electrons B) nuclei C) photons D) neutrons E) protons 2. Which one of the statements below is true? A) When two atoms combine, they do so in definite proportions by weight B) When two different compounds combine to form an element, they do so in definite proportions by weight C) When two different elements combine to form a compound, they do so in definite proportions by weight D) When two molecules combine, they do so in definite proportions by weight E) When two different elements combine to form a mixture, they do so in definite proportions by weight 3. Silver and antimony are an example of two elements which belong to the same A) class B) generation C) grade D) group E) period 4. Which description below fits the 65 29 Cu atom? A) 29 protons, 65 neutrons, 29 electrons B) 29 protons, 36 neutrons, 34 electrons C) 29 protons, 36 neutrons, 31 electrons D) 29 protons, 36 neutrons, 29 electrons E) 31 protons, 34 neutrons, 29 electrons Page 1
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5. A naturally occurring element consists of three
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This note was uploaded on 11/15/2010 for the course CHEM 161 taught by Professor Casaschi,a during the Fall '08 term at University of Hawaii, Manoa.

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test2tro - Practise Exam Chapter 2 1. Which one of the...

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