Final Exam - Exam Name_ MULTIPLE CHOICE. Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following properties or processes do we associate with living things? 1) _______ A) responding to the environment B) growth and reproduction C) evolutionary adaptations D) energy processing E) all of the above 2) About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living matter? 2) _______ A) oxygen, hydrogen, calcium, sodium B) carbon, sodium, chlorine, nitrogen C) carbon, oxygen, sulfur, calcium D) carbon, sulfur, phosphorus, hydrogen E) carbon, hydrogen, nitrogen, oxygen 3) Which of the following best describes the relationship between the atoms described below? Atom 1 Atom 2 H H 3) _______ A) They are polymers. B) They are isotopes. C) They are isomers. D) They each contain 1 neutron. E) They contain 1 and 3 protons, respectively. 4) A covalent chemical bond is one in which 4) _______ A) the inner - shell electrons of one atom are transferred to the outer shell of another atom. B) protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms. C) outer - shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. D) electrons are removed from one atom and transferred to another atom so that the two atoms become oppositely charged. E) outer - shell electrons of one atom are transferred to the inner electron shells of another atom. 6) In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by 6) _______ A) nonpolar covalent bonds. B) polar covalent bonds. C) ionic bonds. D) van der Waals interactions. E) hydrogen bonds. 7) Water's high specific heat is mainly a consequence of the 7) _______ A) small size of the water molecules. B) inability of water to dissipate heat into dry air. C) high specific heat of oxygen and hydrogen atoms. D) fact that water is a poor heat conductor. E) absorption and release of heat when hydrogen bonds break and form. 8) Why does ice float in liquid water? 8) _______
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A) Ice always has air bubbles that keep it afloat. B) Hydrogen bonds stabilize and keep the molecules of ice farther apart than the water molecules of liquid water. C) The crystalline lattice of ice causes it to be denser than liquid water. D) The ionic bonds between the molecules in ice prevent the ice from sinking. E) The liquid water molecules have more kinetic energy and thus support the ice. 10) If the pH of a solution is decreased from 9 to 8, it means that the 10) ______ A) concentration of H + has decreased to one - tenth (1/10) what it was at pH 9. B)
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Final Exam - Exam Name_ MULTIPLE CHOICE. Choose the one...

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