Question

differenciate between lustrous and non lustrous

Answer 1

lustre is a property of metals which defines them having shiny surface for example diamond Emerald crystal et cetera
non lustrous is a property of non metals which indicates them having non Shiny and rough surface for example charcoal graphite et cetera

Answer 2

Answer:

Lustrous Materials

• Materials that shine when rubbed with  sand paper or  when freshly cut.

• E.g. Metals like gold, silver, copper, Aluminium etc.

Non Lustrous Materials

• Materials which lose their shine  when rubbed  with a sand  paper .

• E.g. rubber,

wood, plastic