practice exam 4

practice exam 4 - Practice questions for EXAM 4(no answers...

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Practice questions for EXAM 4 (no answers) - Which of the following is NOT TRUE SI unit for these observables a) m for wavelength b) m/s for speed of light c) mol for number of molecules d) s -1 for frequency e) all of the above are TRUE SI units - How many cm 3 are there in 3.5 m 3 ? A) 3.5 x 10 6 B) 3.5 x 10 -2 C ) 3.5 x 10 2 D) 3.5 x 10 -6 E) none of the above - An object having mass of 1.840 kg has a volume of 0.0015 m 3 , what is the density of the object in g/cm 3 ? A) 1.2 B) 0.0012 C) 0.82 D) 0.0028 E) none of the above - Which is FALSE A) All carbon atoms have exactly 6 protons. B) The atomic number of oxygen is 15.99. C) Metals are located on the left side of the periodic table. D) An anion forms when an atom gains electrons E) Two (2) answers are FALSE - Group 2A elements are also called: A) noble gases. B) halogens. C) alkaline earth metals. D) alkali metals. E) none of the above - What is the charge on an ion that has an atomic number of 24 and contains 22e - ?
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A) 2+ B) 2- C) 1+ D) 1- E) none of the above - A set of three quantum numbers contains: n, l, and s, while m is fixed: m= - 2 . Which of these cannot be in this set: a) n=4 b) l=2 c) s= -1/2 d) all of the above can be e) one of the above cannot be - Which one of the following species has the electron configuration of 1s 2 2s 2 2p 6 ? 1. Na + 2. 2 O - 3. F - A) 1 and 2 only B) 1 and 3 only C) 2 and 3 only D) All of them: 1, 2, and 3 E) Neither 1, 2, nor 3 - What is the name of the ionic compound made of beryllium and chlorine? A) beryllium(II) chloride
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practice exam 4 - Practice questions for EXAM 4(no answers...

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