SAT Subject Test Chemistry,10 edition

Questions   20–23

18 .    Nonmetal

19 .    Class   IA  metal

(A) O 2

(B) CO 2

(C) N 2

(D) H 2 SO 4

(E) He

20 .    Inert   gas,    not very    soluble in  water

21 .    Very    soluble in  water,  forming a   very    acidic  solution

22 .    When    ignited,    burns   with    a   blue    flame   and is  not very    soluble in  water

23 .    Will    not burn,   is  not very    soluble in  water,  and makes   a   weakly  acidic  solution