The teacher decided that in science class, she would teach her students about different materials. Standing at the front of the class, she asked, "Children, if you were able to have one raw material in the world, what would it be?"

Raising his hand, little Timmy said, "I would choose gold. It's worth lots of money and I could by a Porche."

Next, little Lois raised her hand and said, "I would want platinum because it's worth more than gold and I could by a Corvette."

"Very good, both of you," said the teacher. "Johnny, what would you want?"

Little Johnny stood up and said, "Oh, I would want silicon."

"Why would you want silicon, Johnny?" asked the teacher.

"Heck, my mom has two bags of it and you wouldn't believe all the sports cars outside our house!" he replied.