1) Which of the following is NOT a property of most nonmetals? a) excellent electric conductivity b) found on the right side of the periodic table c) solids tend to be dull and brittle d) many are gases at room temperature 2) The only nonmetal in Group 14 is ____. a) carbon b) oxygen c) nitrogen d) fluorine 3) Two of the same atoms bonded together is called a(n) _____. a) isotope b) diatomic molecule c) binary atom d) semiconductor 4) The highly reactive nonmetals of Group 17 are called the ___. a) noble gases b) metalloids c) halogens d) actinides 5) A(n) _____________ is a type of element whose physical properties are generally opposite to those of metals. a) metals b) nonmetals c) metalloids d) gases 6) A substance that carries electricity under certain circumstances, but not under other circumstances is called a(n) _______________. a) Semiconductors b) diatomic molecule c) nonmetals d) metals 7) the elements in Group 18 are known as the .................. a) oxygen family b) noble gases c) nitrogen family d) carbon family 8) Group 15 of nonmetals is called ........................... a) Oxygen family b) nitrogen family c) halogen family d) noble gases 9) Group 17 of nonmetals is called ........................... a) Oxygen family b) nitrogen family c) halogen family d) noble gases 10) Group 16 of nonmetals is called ........................... a) Oxygen family b) nitrogen family c) halogen family d) noble gases 11) The Group 15 element oxygen is used to make compounds known as fertilizers. a) True b) Fale 12) Substances that can carry electric current under some conditions but not under others are called semiconductors. a) true b) false 13) Helium has chemical properties so different from those of the other elements that it cannot be placed in any group. a) true b) false 14) The elements that have some properties of metals and some properties ofnonmetals are called halogens. a) true b) false 15) When two or more atoms bond by sharing electrons, they form a molecule. a) true b) false 16) Atoms of nonmetals usually lose electrons when they combine with other atoms. a) true b) false

Grade 6

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