properties on new materials grade 6

Plastic is made by .......................... change of some compounds of ..........................

(Write the scientific term) It is the original material of plastic

Glass is a mixture of .........................., ....................., and sodium carbonate

(true or false) Concrete is made of water and iron

(True or false) Every materials is useful for all purposes

Concrete is in .................. state when it is formed, while after it dries, it becomes in ...................... state

Concrete is made of a mixture of rock, ....................... and ...........................

(true or false) Smart clothes can light up in dark places

(Write the scientific term) A material is made by chemical change of some compounds of petroleum

Steel is made of a mixture of ............................ and other elements