Question

four properties of materials

Answer 1

A material's property (or material property) is an intensive property of some material, i.e. a physical property that does not depend on the amount of the material. These quantitative properties may be used as a metric by which the benefits of one material versus another can be compared, thereby aiding in materials selection.

A property may be a constant or may be a function of one or more independent variables, such as temperature. Materials properties often vary to some degree according to the direction in the material in which they are measured, a condition referred to as anisotropy. Materials properties that relate to different physical phenomena often behave linearly (or approximately so) in a given operating range[further explanation needed]. Modeling them as linear can significantly simplify the differential constitutive equationsthat the property describes.

Answer 2

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❥ $\displaystyle\blue{\underline{\underline{Properties\:of\: Materials \:?}}}$

$\huge\underline\bold\green{αnswєr}$

$\:\sf\underline\blue{Lustre\:(shining)}\:$ :-

⠀❝ The ability to reflect light or shining is called luster.❞

so we conclude that copper ,aluminium and iron possess shine or lustre, mostly the metals such as gold, silver, copper, iron ,aluminium tin etc. show the property of lustre and they are lustrous. other materials do not possess is the property of lustre.

$\:\sf\underline\purple{Appearance}\:$ :-

Materials usually appear different from each other :-

• cotton appears different from wood.

• wood appears different from cotton.

• copper appears different from aluminium.

• aluminium appears different from iron.

copper aluminium and iron appear different still they have same similarities.

$\:\sf\underline\green{Hardness}\:$ :-

Take pieces of wood, aluminium ,cotton ,paper etc. and try to scratch their surfaces with the help of an iron piece .you will see some materials are scratched easily, they are called soft while other materials are difficult to scratch or not scratched They are called the hard ,

• cotton and sponge are soft while,

• copper and aluminium or hard.

$\:\sf\underline\red{Transperancy}\:$ :-

The substances through which we can see clearly are called transparent substances and this property is called transparency. glass, water air and some plastic are transparent materials or substances.