Question
what materials are in a ping-pong ball and bouncy ball
i am doing a science fair project and i need to know
Alex
Answer
<P>Try cutting a piece out of the ping pong ball and examining it. What other materials does it remind you of? Traditionally, these balls were made of "celluloid", an early plastic developed in the 19th century. Maybe they still are, as you usually don't change a standard item like this. Look up celluloid in a good chemistry book or maybe a big dictionary and see what it is made of. (the "cell" indicates cellulose, which is in your biology book). <BR><BR>I can't tell what kind of "bouncy ball" you mean, so maybe you can show it to your teacher and ask the question.<BR><BR>Also, you should find the shift key on your keyboard and make a capital "I" when you write people.<BR><BR>George Curtis<BR>University of Hawaii</P>
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