1
A) 7 B) 10 C) 13 D) 15 2
A) the sharing of equal numbers of electrons by two atoms B) the exchange of equal numbers of electrons by two atoms C) the combination of two atoms of the same valence D) sharing of unequal numbers of electrons by two atoms 3
A) 8 B) 32 C) 24 D) 16 4
A) 500 B) 300 C) 125 D) 250 5
A) electrons B) protons C) neutrons D) positrons 6
+ ions?A) 4 B) 10 C) 2 D) 7 E) 12 7
A) 4 B) 10 C) 2 D) 7 E) 12 8
A) sodium B) oxygen C) hydrogen D) nitrogen E) carbon 9
A) electrons are shared unequally between atoms B) electrons are shared equally between atoms C) neutrons are transferred between atoms D) protons are shared equally between atoms E) electrons are transferred between atoms 10
A) 5600 years B) 5600 days C) 5600 centuries D) 600 years E) 5000 years 11
A) neutrons it has in its nucleus B) isotopes it forms C) protons it has in its nucleus D) energy levels it has E) electrons it has in its outermost energy level 12
A) ions B) hydration shells C) polar molecules D) nonpolar molecules E) all of the above 13
A) water molecules are polar B) it takes very little heat to change the temperature of water C) all living organisms contain water D) ice is less dense than liquid water E) none; all these statements are true 14
A) disintegrate B) gain neutrons C) lose electrons D) lose carbon E) are converted to oxygen atoms 15
A) created the periodic table B) discovered the first known isotopes C) carried out the first oxidation reaction D) developed the pH scale E) discovered the structure of atoms 16
A) 2 and 4, respectively B) 8 and 6, respectively C) 4 and 8, respectively D) 2 and 8, respectively E) 4 and 16, respectively 17
A) 1 B) 2 C) 3 D) 4 E) 5 18
A) 12C and 13C B) 8O and 16S C) 10Ne and 18Ar D) all of the above E) none of the above 19
A) All orbitals have the same shape. B) Orbitals pinpoint the exact location of electrons. C) s orbitals are dumbbell-shaped D) the K energy level contains both s and p orbitals E) none of the above 20
A) donate H+ ions to solutions B) accept H+ ions from solutions C) accept OH- from solutions D) both b and c 21
A) water-loving; water-fearing B) polar; non-polar C) soluble in water; soluble in lipid D) a-c are all are correct E) a-c are all are incorrect 22
A) covalent bonds B) ionic bonds C) hydrogen bonds D) those where free electrons are available to form other bonds E) polar bonds 23
A) True B) False 24
A) True B) False 25
A) True B) False 26
A) True B) False 27
A) Carbon-14 B) Carbon-12 C) Deuterium D) Oxygen-16 28
A) their number of protons B) their number of electrons C) their number of neutrons D) their ions E) their atomic numbers 29
A) 4 electrons B) 6 electrons C) 7 electrons D) 10 electrons E) 12 electrons 30
A) are at a higher energy level than those that are closer to the nucleus B) absorb energy as they move closer to the nucleus C) are at a lower energy level than those that are closer to the nucleus D) both b and c 31
A) ionic bond B) single covalent bond C) double covalent bond D) hydrogen bond 32
A) protons B) neutrons C) electrons D) energy levels E) bonds 33
A) orbitals B) electrons and protons C) electrons and neutrons D) protons and neutrons E) nuclei 34
A) 1 B) 8 C) 16 D) 4 E) 10 35
A) the closer it orbits to the nucleus B) the farther it orbits from the nucleus C) the greater the number of other electrons that can share its orbital D) the more likely it is to be transferred rather than shared
2002 McGraw-Hill Higher Education