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Chemistry 1301

by: Corina Johnson

Chemistry 1301 10886

Corina Johnson

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Prep for exam 1
Foundations of Chemistry
Simon Bott
Study Guide
50 ?




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This 4 page Study Guide was uploaded by Corina Johnson on Sunday February 21, 2016. The Study Guide belongs to 10886 at University of Houston taught by Simon Bott in Winter 2016. Since its upload, it has received 62 views. For similar materials see Foundations of Chemistry in Chemistry at University of Houston.


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Date Created: 02/21/16
CHEM 1301 SPRING 2004 TEST 1 VERSION 1 NO CHEATING! BUBBLE IN “1” IN THE P COLUMN TO GET YOUR GRADE POSTED!!!!! [the only way you’ll find out how you did!] 1. The Ancient Greeks believed in four elements. One of these "elements" today is known to be a pure substance. Which is it? (A) air (B) earth (C) silver (D) fire (E) water 2. Which of the following formulas represents an element? (A) Bo (B) HI (C) BO 3 (D) O2 (E) H 2 3. When 14 g of nitrogen are combined with 32 g of oxygen, the only thing produced is nitrogen dioxide and nothing else is left over. (I) how many grams of nitrogen dioxide are made? (II) How many grams of oxygen would be used to combine with 28 g of nitrogen to make nitrogen dioxide? (A) (I) 18 g (II) 32 g (B) (I) 46 g (II) 32 g (C) (I) 46 g (II) 16 g (D) (I) 46 g (II) 64 g (E) (I) 644 g (II) 46 g 4. Which of the following is incorrectly named as a law or theory? (A) The theory of evolution that states that man is descended from apes. (B) Parkinson's Law that states that work expands to fill the allotted time. (C) Boyle's Lawthat states that the volume and pressure of a gas are inversely proportional (D) VSEPR Law that states that shape of a molecule is due to electrons repelling each other (E) All of these are correctly named as a law or a theory. 1 5. Which of the following statements about Rutherford's experiment is false? (A) Alpha particles were used as they are positive. (B) The particles were fired at a piece of aluminum foil. (C) Most of the particles passed through the foil, indicating that most of the atoms were empty space. (D) A very few particles bounced back, indicating the presence of a small, massive, positive nucleus. (E) The experiment led to the discarding of the "plum-pudding" model of the atom (otherwise known as the "chocolate chip cookie model"). 6. Under the modern atomic theory, which of the following statements is false? (A) Atoms contain the same number of protons and electrons. (B) The mass of an atom in amu is approximated as the number of photons plus the number of neutrons present in the nucleus. (C) Atoms can be split into a nucleus and the electrons, and the electrons move around the nucleus. (D) Different isotopes of an element contain different numbers of neutrons. (E) The three primary sub-atomic particles all have different charges. 7. Which statement is true? (A) The elements may be broadly classified as metals, non-metals and noble gases. (B) Elements in a row in the periodic table have similar chemical properties. (C) In the periodic table that we use, the elements are arranged in order of increasing atomic number. (D) Rutherford's scattering experiment proved that all atoms contain electrons. (E) Experiments using the Cathode Ray Tube proved that all atoms contain electrons. 8. Which of the following atoms has a symbol not taken from its English name? (A) phosphorus (B) cobalt (C) nickel (D) krypton (E) potassium 9. Which of the statements is true? (A) Neon is a pnictogen (B) Chloroform is a halogen (C) Napium is an alkali metal (D) Vanadium is a transition metal (E) Flubber is a halogen 2 10. Which of the following statements is incorrect? (A) Copper is ductile (B) Selenium is a metalloid (C) Magnesium conducts electricity (D) Sulfur is not malleable (E) Gallium is shiny. 11. Which of the following symbols represents an atom that contains 22 protons and 26 neutrons? 26 22 48 48 112.4 (A) Ti (B) Fe (C) Ti (D) Fe (E) Cd 12. A newly discovered element with atomic number 120 has 3 isotopes. The first isotope contains 180 neutrons and a fractional abundance of ½; the second, 181 neutrons and a fractional abundance of ¼; and the third isotope contains 182 neutrons. What is the atomic mass (relative mass) of the element? (A) 180.75 (B) 181 (C) 300 (D) 300.75 (E) 301 13. Which of the following are definitely isotopes of each other? 1. a chlorine atom with a mass of 35 2. a chlorine atom with 18 neutrons in the nucleus 3. an atom with 18 protons and 18 electrons in the nucleus 4. a sulfur atom with a mass of 36 (A) 1 and 2 (B) 2 and 3 (C) 3 and 4 (D) all of them are isotopes of each other (E) none of them are isotopes of each other 14. Which of the following statements is incorrect? (A) red light has a shorter wavelengththan infrared (B) ultraviolet has a higher energy than violet light (C) green light has a higher frequency than blue light (D) gamma rays are the most energetic form of light (E) radiowaves have a longer wavelength than microwaves 15. A form of light has energy of 9.00 x 10-24J. Given that h = 6.63 x 10-34Js and c = 3.00 x 10 m/s, what is the wavelength of this light? -48 -2 -3 10 (A) 1.79 x 10 m (B) 45.33m (C) 2.21 x 10 m (D) 2.21 x 10 m (E) 1.36 x 10 m 3 -18 16. In a simplified and example version of Bo-18s model, an electron in the first orbit has an energy of 5.00 x 10 J. If the energy of an electron in the second orbit is 8.00 x 10 J, what will be the energy of one form of absorbed light? -17 (A) 1.30 x 10 -18J (B) 1.30 x 10 J (C) 4.00 x 10 -35J (D) 3.00 x 10 -18J -17 (E) 3.00 x 10 J 17. Which famous person is NOT correctly matched with his nationality? (A) Niels Bohr was Danish (B) Ernest Rutherford was Australian (C) John Dalton was British (D) Dmitri Mendeleyev was Russian (E) Aristotle was Greek. 18. Which of the following statements is incorrect? (A) The lowest energy p-subshell is the 2p (B) A maximum of 10 electrons can go into a d-subshell (C) Electrons have only certain, allowed energy values (D) A boron atom has electrons in 3 shells (E) The fifth shell in an atom can contain a maximum of 50 electrons. 19. Which represents the electronic structure of the element having the atomic number 17? 2 8 7 2 2 6 2 5 2 8 7 (A) 1s 2p 3d (B) 1s 2s 2p 3s 3p (C) 1s 2s 3p (D) 1s 2s 2p 2d 3s 3p 3d 1 (E) 1s 2p 2d 3f 7 20. What would appear as the last component of the electron configuration of a selenium atom? (A) 3p4 (B) 4d 4 (C) 4p16 (D) 3p 34 (E) 4p4 4


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