As he was waiting, he ate a cookie that crumbled all over the counter. They quickly finished their waffles and ran out the door to catch their bus. When a bar of soap dissolves in water it gets smaller. When matter changes we see a change in size, shape and state of matter. The three states of matter are solids, liquids and gases.
Corn kernels contain liquid water and starch within a solid kernel wall.
Pop several varieties of popcorn using 100 kernels of each variety. Investigate which brand popped the most kernels. Graph the results. Compare the price of each variety with the amount that popped to find the best buy. The volume of an object is the amount of space it takes up.