Let's go over some vocabulary:

Chametz:

Chametz is made from one of these five grains.

1) WHEAT

2)RYE

3)SPELT

4)OATS

5)BARLEY

Matzah MUST be made from one of these five grains, but you have less than 18 minutes to make the matzah.  If it takes longer than 18 minutes, then it becomes chometz. 


haggadah Section: Introduction