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Chemistry of Popcorn
38
Impact on Society
1. America eats how much popcorn each year?
a. 16 billion tons
b. 16 billion liters
c. 16 billion quarts
d. 16 billion stone
2. Popcorn explodes when ….
a. The water inside is superheated and turns the starch to a gelatinized goop
b. The gelatinized goop reaches about 347degrees
c. The pressure inside the kernel reaches about 135 pounds per square inch
d. All of the above
3. How big are popcorn kernels after they pop?
a. 2–3 times the original size
b. 10 times the original size
c. 20 times the original size
d. 35–40 times the original size
4. Popcorn kernels need how much moisture to pop?
a. 3.5–4% water
b. 13.5–14% water
c. 18.5–20% water
d. 100% water
5. Popcorn is a…
a. Whole Grain
b. Fiber source
c. Carbohydrate
d. All of the above
Popcorn in Korea!!!!
Test
Sources
- http://www.newsmax.com/Health/Headline/microwave-popcorn-PFOA-diacetyl/2013/03/21/id/495819/
Answer
Key
- http://www.popcorn.org
- http://www.carolina.com/teacher-resources/Interactive/the-science-of-popcorn/tr23952.tr
- http://humantouchofchemistry.com/how-does-popcorn-pop.htm
- http://www.popcorn.org/EncyclopediaPopcornica/WelcometoPopcornica/HistoryofPopcorn/tabid/106/Default.aspx
1. C.
2. D.
3. D.
4. B.
5. D.
Companies
Popcorn Breeding
Health Risks
Processing
- Selected by genetic traits
Act II
- Vibrating screen
Orville Redenbacher's
Machine
Microwave
- Inbreeding leads to genetic segregation
- Gravity separator
C. 16 Billion quarts
- Inbreds crossed to produce hybrids
Pop Secret
Diacetyl
Perfluorooctanoic Acid (C8)
Jiffy Pop
- Packaged
Pop Weaver
The Chemistry
of Popcorn
D. All of the above
Production & Agriculture
d. 35–40 times the original size
History
Health Benefits
By: Blake Watson & Keaton Zvara
Great Depression
Planting & Growth
Low calories
Harvesting
Antioxidant rich
- Mature when stalk is brown and dry
- Planted 1.5 inches deep
World War II
http://www.reminisce.com/1940s/postwar-snack-wagon-paid-off-handsomely-with-hot-offerings/
- Germinate in 7 days
b. 13.5–14% water
- Moisture 16-20%
https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAYQjB0&url=http%3A%2F%2Fwww.reminisce.com%2F1940s%2Fpostwar-snack-wagon-paid-off-handsomely-with-hot-offerings%2F&ei=-K9tVbjrI5CAygS5loLgBA&bvm=bv.94911696,d.cGU&psig=AFQjCNECHA174eK1baXcq6PUM62GhnQ4cA&ust=1433336795080292
"Nutritional gold nuggets"
Our Opinion
Microwave Popcorn
- Plants reaches 8 ft.
- Drying bins
- It's AMAZING!!!
- Shocked by the harmful chemicals
d. All of the above
Stoichiometry
The Kernel
- Cereal Grain
- Kernel= 0.15 grams
- 14% of kernel is water
- 0.15 • 0.14 (% of H2O in kernel) =.021 grams of H2O in a single kernel
- .021g/ 18.016 (H2O molar mass) = .0012 moles of water in a single kernel
- Four Parts
Chemistry
Process
Chemical Formulas
Starch
Water
*Majority of composition of a kernel