2.copper gold silver and aluminum are good example of ___?
A.absorption
B.conductor
C.convestion
D.insulator
3.which of the following is a good insulator of heat and electricity?
A.glass bottle
B.stone
C.tin can
D.wood
4.Which is a good example of a conductor?
A.leather
B.plastic
C.water
D.rubber
5.wich is not belong to the group?
A.aluminum,copper,gold
B.copper,water,iron
C.cotoon cloth,plastic,rubber
D.gold,tin can,electrical tape​