1 A) metals B) nonmetals C) metalloids D) colloids 2 A) malleable B) ductile C) inflexible D) semisolid 3 A) ductile B) malleable C) nonmetal D) ionic 4 A) more chemically stable B) less chemically stable C) electrically charged D) radioactive 5 A) metallic B) ionic C) covalent D) transition 6 A) Outer-level electrons are weakly held. B) Outer-level electrons are tightly held. C) Metals do not share the electrons in their outer energy levels. D) The outer energy levels of metals are nearly filled. 7 A) alkaline earth metals B) alkali metals C) transition elements D) rare earth metals 8 A) alkali B) alkali metals C) lanthanide D) actinide 9 A) 1 B) 2 C) 3 D) 4 10 A) radium B) calcium C) barium D) Which elements are needed by the human body for life? 11 A) They are more stable. B) They are less stable. C) They are usually gases at room temperature. D) They are brittle and powdery. 12 A) iron, cobalt, and nickel B) iron, copper, and zinc C) iron, indium, and iridium D) iron, tin, and lead 13 A) iron triad B) transition elements C) alkaline earth metals D) alkali metals 14 A) aluminum B) iron C) cobalt D) nickel 15 A) copper, silver, and gold B) copper, nickel, and gold C) nickel, silver, and platinum D) gold, silver, and platinum 16 A) mercury B) zinc C) cadmium D) titanium 17 A) lanthanides B) actinides C) iron triad D) noble gases 18 A) They are radioactive. B) They have magnetic properties. C) They are used in TV tubes to produce colors. D) Most of a human's body mass is made up of these.
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