Chem 1410 Exam 1 review
Chem 1410 Exam 1 review CHEM 1410
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Popular in Chemistry
This 5 page Bundle was uploaded by Seena Sunil on Tuesday January 26, 2016. The Bundle belongs to CHEM 1410 at University of North Texas taught by Susan Broadway in Spring 2016. Since its upload, it has received 87 views. For similar materials see General Chemistry in Chemistry at University of North Texas.
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Date Created: 01/26/16
Exam 1 Review 1) Which of the following in not a physical property? A. Boiling Point. B. Reactivity with water. C. Density. D. Tasting like pennies. 2) Which of the following is not a chemical property? A. Reactivity with acids. B. Heat of combustion. C. Smelling like pennies. D. Reactivity with bases. 3) Which of the following is an assumption of Dalton’s Atomic Theory? A. A chemical reaction involves the joining, separating, or rearranging of atoms. B. All matter is composed of compounds, which are extremely tiny. C. Trick question, it is actually Samir’s Atomic Theory that is used in chemistry. D. Atoms of the same element have a variety of chemical properties. 4) Elements are composed of how many types of atoms? A. 2 B. 10 C. 1 D. 5 5) Which of the following is the correct notation for a Nanometer? A. 1x10 m -12 B. 1x10 -9 pm C. 1x10 m D. 1x10 um 6) Which of the following is the correct notation for 1 Kilogram? 3 A. 1x10 kg B. 1x10 kg C. 1x10 km D. 1x10 g 7) Which of the following is not a variation of the Density formula? A. Mass = Volume / Density B. Density = Mass / Volume C. Mass = Volume x Density D. Volume = Mass / Density 8) What is the correct number of significant figures for the equation 9.054500 + 2.23? A. 11.2845 B. 11.284 C. 11.28 D. 11.2 9) What is the correct number of significant figures for the equation 087.988 / 02.334? A. 37.69 B. 37.698 C. 37.6983 D. 37.69837 10) What is the name for the elements in group 7A (17)of the periodic table? A. Alakline Earth B. Halogens C. Chalcogens D. Nobel Gases 11) What is the charge of the nonmetal elements in group 6A (16) of the periodic table? A. +/- 2 B. -2 C. +2 D. All of these are correct 12) What is the charge of the elements in group 2A (2) of the periodic table? A. -2 B. +2 C. +/-2 D. All of these are correct 13) Generally, an ionic bond is composed of what two types of elements? A. Metals and Metals B. Nonmetals and Nonmetals C. Metals and Nonmetals D. Metalloids only 14) What is the Atomic mass of Fluorine in 4 significant figures? A. 16.00 amu B. 19.00 g/mol C. 19.00 amu D. 22.22 amu 15) If sodium (Na) has an atomic mass of 23.00, how many protons and neutrons are in the nucleus? A. 11 protons and 11 neutrons B. 12 protons and 11 neutrons C. 11 protons and 12 neutrons D. 12 protons and 12 neutrons 16) Calculate the number of moles in 20 grams of Calcium. A. 40.078 mol B. .499 g C. .499 mol D. 20 mol 17) Calculate the number atoms in one mole of Sulfur. A. 32.065 atoms B. 1 atom 23 C. 6.022x10 atoms D. 1.9309x10 23atoms 18) Calculate the number of atoms in 300g of Thorium. A. 1.293 atoms B. 2.146x10 -24atoms 23 C. 7.785x10 atoms D. 6.022x10 23atoms 19) Name the following compound and identify whether it is ionic or molecular. CaI 2 A. Calcium Diiodide, Molecular B. Calcium Diiodide, Ionic C. Calcium Iodide, Molecular D. Calcium Iodide, Ionic 20) Write the formula for the following compound and identify it is ionic or molecular. Propane (hydrocarbon) A. I can’t find propane on periodic table B. C 3 ,8Molecular C. C 3 ,8Ionic D. C H , Ionic 4 10 21) Gallium has two naturally occurring isotopes: 69Ga and 71Ga, with masses of 68.9257 amu and 70.9249 amu, respectively. Calculate the abundances of these iostopes of gallium. 22) Automobile batteries are filled with sulfuric acid. What is the mass of the acid (in grams) in 500. 3 Ml of the battery acid solution if the density of the solution is 1.285 g/cm and the solution is 38.08% sulfuric acid by mass. 23) Which of the following particles make up the nucleus of an atom? A. Protons B. Protons and neutrons C. Protons, neutrons and electrons D. Electrons 24) Who discovered the negative charge of electrons? A. Thomson B. Millikan C. Chadwick D. Rutherford 25) Who used alpha particles and gold foil to discover protons? A. Rutherford B. Millikan C. Chadwick D. Thomson 26) What is the name of the following compound? (NH ) SO 4 2 4 A. Ammonium sulfite B. Ammonium sulfate C. Ammonia sulfite D. Ammonia sulfate
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