Question

Metals are usually:
A. Good conductors of heat
B. Good conductors of electricity
C. Good elastic substances
D. All of the above

Answer 1

Hint: Before talking about the answer, you should know what a metal is and also about its physical properties. Metal is defined as an element that forms positive ions, also called cations. Metals are lustrous, malleable, ductile and good conductors of heat and electricity.

Complete step by step answer:
A metal is defined as a material when it is specially prepared it shows a lustrous and shiny appearance. There are many physical properties of metals. Metals are lustrous, they are good conductors of electricity and heat.

1.They are malleable, that means, they can be hammered into thin sheets.
2.They are also ductile, that means, they can be drawn into wires.
3.Metals are good conductors of heat because the positive metal ions are closely packed together in a symmetric arrangement. These metal ions do not move from their position and constantly vibrate. These vibrations from metal ions release energy and this is how a metal is a good conductor of heat.
4.Metals are good conductors of electricity because they conduct the flow of electrons very easily. Copper is the most popular material used for conductors.
5.Steel shows greater elasticity than rubber. This statement is proved from Young’s modulus that defines the relationship between strain and stress. When the same amount of force is applied to the rubber wire and steel wire, then the rubber wire will be easily extended than the steel wire. So therefore, strain produced in steel is much smaller than the strain produced in rubber. Therefore, it proves that steel has greater elasticity than rubber.

So, the correct answer is Option D.

Note: Metals are lustrous, malleable, ductile and good conductors of heat and electricity. Metals are used in transportation, household conveniences.Metals are elements that can form positive ions.