what are properties of materials

Asked by vish76bsnl | 10th Apr, 2020, 07:04: PM

Expert Answer:

Properties of Material:
 
Appearance: The appearance varies from one material to the other. Colour, texture, roughness and other parameters contribute to the appearance of materials. Materials with a shiny surface are called lustrous(Gold, silver, copper), whereas those which have a dull appearance are called non-lustrous(Paper, cardboard, chalk).
 
 Hardness & softness: Materials which cannot be easily compressed, cut, bent (moulded) or scratched are called hard materials.Example: Iron, steel, wood, stoneetc.Materials which can be easily compressed, cut, bent (moulded) or scratched are called soft materials.Example: Sponge, cotton, wax etc.
 
 Solubility: Materials which readily dissolve in water are called soluble materials.Example: Milk, copper sulphateetc.Materials which do not readily dissolve in water are called insoluble materials.Example: Flour, chalk powder, sand, oil etc.
 
 Density: Substances which are heavier than water and have relative density more than '1' sink in water. Examples: Copper, soil, glass etc. Substances which are lighter than water and have relative density less than '1' float in water. Examples: Wood, ice, oil etc.
 
Opacity: Materials through which we can see clearly are called transparent materials. Examples: Glass, air etc.Materials through which we can see, but not clearly are translucent materials.Examples: Oiled paper, ground glass etc.Materials through which we cannot see at all are called opaque materials.Examples: Iron sheets, brick wall etc.
 

Answered by Ramandeep | 10th Apr, 2020, 08:24: PM