\begin{tabular}{|c|l|l|} \hline element & \multicolumn{1}{|c|}{ description } & metal or nonmetal? \\ \hline 1 & Element1isacolorlessgas.100cm3ofthegasarecompressedtoanewvolumeof10cm3.Whenthecompressedgasisallowedtoleakoutthroughasmallhole,itbecomeswarmer. & nonmetal(cantdecide) \\ \hline 2 & Element2isahardsilvery-graysolid.Asmall10.gcubeofitistappedlightlywithasmallhammer.Thiscausesoneofthecornersofthecubetobedentedin. & metal \\ nonmetal (can't decide) \\ \hline 3 & Element3isashinysilvery-graysolid.Wiresarefastenedtoeachsideofa2cmslabofit,andanordinaryhousehold9VbatteryishookedupsothatitcanfeedelectricitythroughtheslabtoanLED.TheLEDglowsbrightly. & metalnonmetal(cantdecide) \\ \hline \end{tabular}