1) . ............... The metal used to cover other substances which rapidly rust is a) silver b) copper c) lead d) iron 2) One gram of…………..contains one type of atoms a) iron b) ammonia c) hydrogen chloride d) water 3) .......... All of the following are diatomic gaseous molecules except a) hydrogen b) nitrogen c) argon d) chlorine 4) The rule 2n2 can't be applied to the ………………energy level a) K b) L c) M d) O 5) ..........When the speed of a moving object is doubled it 'kinetic energy a) will b) not change c) will be four times it's d) will be doubled e) will be three times its 6) .……………… Heat is transferred from cube (A) to cube (B) because at a) Larger in volume b) greater in density c) higher in temperature d) all previous

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