Consumer Science, Chemistry
2nd – 4th grades
Difficulty of Project
Less than $20.00
Adult supervision is strongly recommended with any cooking activity.
Easily purchased from a grocery store
Approximate Time Required to Complete the Project
About an hour to conduct the experiment; one day to prepare the science fair display
To determine which brand of microwave popcorn leaves the fewest unpopped kernels
Materials and Equipment
- 5 different brands of microwave popcorn
Inside a kernel of corn is starch and a little bit of water. When the water inside a kernel of corn is heated, it becomes a gas. The gas grows and causes the starch to break out of its outside covering forming a piece of soft, white popcorn.
In this investigation, different brands of microwave popcorn are tested and compared.
Terms, Concepts, and Questions to Start Background Research
kernel: the whole seed of corn
When the water inside a kernel of corn heats up, it becomes a gas and expands bursting out of its outer covering creating popcorn.
- What causes microwave popcorn to pop?
- Are some brands of microwave popcorn better than others?
- Is there anyway to reduce the number of unpopped kernels?
- Gather the necessary materials.
- Follow the directions on the bag to prepare the microwave popcorn.
- When the popcorn is finished popping, place the popped kernels in a bowl. Count the unpopped kernels and record.
- Repeat Steps 2 – 3 for each of the different types of microwave popcorn. Record the results.
“Why Popcorn Pops and Other Grains Don’t” at Moment of Science at http://indianapublicmedia.org/amomentofscience
“Steam Explosions – the science of popcorn” at Kitchen Science Experiments at the www.thenakedscientists.com
Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state’s handbook of Science Safety.