Question

(i) Compare metals and non - metals based on their physical properties (any four points). (ii) What are metalloids? Give two example.

Answer 1

1.metals are malleable ,non metals non malleable .metals are lucture ,non metals are non lucture.
2.metals has both properties of metal and non metal

Answer 2

metals are malleable and ductile but non metals are neither malleable or ductile they are brittle.metals are llustrous but non metals are not lustrous excwept graphite.metals have hiigh melting and boiling opoints but non metals have usual low melting and boliling points except diamond.metals are good conductors of heat but non metals are bad conductors of heat.metalloids are those elements that have properties of both metals and non  metals.eg;siliconand arsenic