Jawaban:

2.

a) ceramics = High melting points, Great hardness and strength.

Considerable durability, Low electrical and thermal conductivity and  chemical inertness

b) plastics =  hardness, density, tensile strength, thermal resistance, and glass transition temperature

c) glass = transparency, heat resistance, pressure and breakage resistance and chemical resistance

d) metals = high melting points, good conductors of electricity, good conductors of heat, high density, malleable, and ducktile

e)Fibres =  length, fineness, crimp, color and luster

Penjelasan:

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