Which type of material was the first to be transformed by humans to make a useful object?

Plastics are what type of material?

Which metal is a ferrous metal?

Synthetic polymers are made of hydrocarbons from what source?

What ceramic material did ancient Romans make from sand?

What is the earliest and most common composite material made by man?

What two substances must a composite material contain?

Metals have a(n) ___________ structure such as face-centered cubic or body-centered cubic.

Ceramics are lightweight, strong, and stiff, but they can also be ___________.

What element is commonly added to iron to make an alloy with higher strength than the iron alone?

Which of these substances is an organic polymer?