READER%202A%20%20EXERCISES%20%20for%20EXAM%201

READER%202A%20%20EXERCISES%20%20for%20EXAM%201 - Copyright...

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Copyright 2010 TOUPADAKIS CHEMISTRY READER 2A ADDITIONAL EXERCISES FOR UNITS 1-3 1 ADDITIONAL EXERCISES FOR UNITS 1-3 CONCEPTS (Select the best answer) 1. Which of the following would be affected by an electric field? a. Alpha particles b. Beta particles c. electrons d. protons e. all of the above 2. The total numbers of neutrons, protons, and electrons in 27 Al 3+ are: a. 14 neutrons, 13 protons, 13 electrons b. 35 neutrons, 17 protons, 18 electrons c. 14 neutrons, 13 protons, 10 electrons d. 18 neutrons, 17 protons, 18 electrons e. 13 neutrons, 10 protons, 14 electrons 3. Which is the more abundant isotope, H-1 or H-2? a. the two isotopes are equal in abundance b. H-1 c. H-2 d. Tritium, a third unstable isotope is more abundant e. none of the above 4. Choose the CORRECT statement. a. A polyatomic ion is a group of bonded atoms that exists as an entity and has equal number of protons and electrons b. Ionic compounds result from combinations of nonmetals c. A cation has always an electrical charge equal to +1 d. The empirical formula gives the connectivity of atoms within a molecule e. A cation has always a positive charge
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Copyright 2010 TOUPADAKIS CHEMISTRY READER 2A ADDITIONAL EXERCISES FOR UNITS 1-3 2 5. Choose the CORRECT name formula combination. a. CaH 2 calcium hydride b. SiO 2 silicon oxide c. HClO chloric acid d. Cu 3 (PO 4 ) 2 copper phosphate e. AlCl 3 aluminum trichloride 6. Choose the correct name for the following organic compound. CH 3 CH 2 CH 2 CH(CH 3 ) 2 a. propane b. hexane c. 1,1-dimethylbutane d. 1,3-dimethylpropane e. 2-methylpentane 7. When the chemical equation below is balanced with the SMALLEST INTEGER coefficients, the coefficient of O 2 is: C 2 H 4 O + O 2 CO 2 + H 2 O a. 1 b. 2 c. 4 d. 3 e. 5 8. Choose the CORRECT statement: a. Molarity is defined as moles of solute per liter of solvent b. % by mass is defined as grams of solute per 100 g of solvent c. % by volume is defined as grams of solute per 100 L of solution d. Molarity is defined as moles of solute per liter of solution e. all of the above
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Copyright 2010 TOUPADAKIS CHEMISTRY READER 2A ADDITIONAL EXERCISES FOR UNITS 1-3 3 9. When the chemical equation representing the complete combustion of acetic acid C 2 H 4 O 2 is balanced with the SMALLEST INTEGER coefficients, the sum of the coefficients in the balanced equation is? a. 9 b. 7 c. 2 d. 4 e. 5 10. The mass of any atom: a. is equally distributed all over the volume of the atom b. is exactly equal to the sum of the masses of its protons and neutrons c. is exactly equal to the sum of the masses of its electrons d. is almost exclusively located in the nucleus of the atom e. none of the above 11. Choose the INCORRECT statement. a.
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READER%202A%20%20EXERCISES%20%20for%20EXAM%201 - Copyright...

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