material  - the matter something is made from , brittle - Something that is hard but can break easily., opaque - Objects that do not allow any light to travel through them,, reflective - A material which reflects light well., translucent - Objects that allow some light to travel through, but it is scattered., conductor - A material that conducts or transmits heat, electricity or sound, insulator - A material that does not conduct or transmit heat, electricity or sound, transparent  - Objects that allow light to easily travel through them,

Materials

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