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The most important chemical reaction- baking
Transcript of The most important chemical reaction- baking
There are two types of heat changing a chemical reaction:
exothermic (a reaction that produces heat)
endothermic (a reaction that takes heat in)
When you make a cake, you are producing an endothermic chemical reaction. What is baking??? Definition: Without baking we wouldn't have... BREAD!!! How it impacts social life??? Baking is the most important chemical reaction because it has these social effects:
makes parties fun
some items give nutrition
helps develop friendships Citations "The Chemistry of Baking." J. H. Czernohorsky, n.d. Web. 26 May 2013. <http://nzic.org.nz/ChemProcesses/food/6D.pdf>.
Cupcake Sprinkles Make Your Cupcake Stand out of the Queue." Cupcake Chef, 3 June 2010. Web. 29 May 2013. <http://www.channel4.com/media/images/Channel4/4Food/recipes/cakes/cupcakes_with_sprinkles_A0.jpg>.
"You May Also Like." Everyday Baking from Everyday Food. National Productions, n.d. Web. 29 May 2013. <http://www.gpb.org/everyday-baking-from-everyday-food>.
"Baking Tips: 10 Hints to Help You Bake Like a Pro." Food Network. N.p., n.d. Web. 29 May 2013. <http://img.foodnetwork.com/FOOD/2013/01/14/fnd_Baking-101-Butter-Flour_s4x3_lg.jpg>.
"Top 10 List: Favorite Muffin Recipes." Brown Eyed Baker. N.p., 13 July 2011. Web. 29 May 2013. <http://www.browneyedbaker.com/wp-content/uploads/2011/07/chocolate-chocolate-chunk-muffins-main.jpg>.
"Doghnuts." OutSet. N.p., 9 Mar. 2009. Web. 29 May 2013. <http://www.outsetmedia.com/sites/default/files/51681-doughnuts.jpg>.
"Bake a Chemistry Cake." Education.com. N.p., 3 Oct. 2009. Web. 29 May 2013. <http://www.education.com/activity/article/Bake_Cake_fifth/>.
"Flour." Hasmert. N.p., n.d. Web. 29 May 2013. <http://www.hasmert.com/urun_resimleri/un.jpg>.
"Yeast." The Cook's Thesaurus. N.p., 19 Feb. 2012. Web. 29 May 2013. <http://www.foodsubs.com/Photos/yeast-dry.jpg>. The baker: Aadrita Chatterjee The most important chemical reaction- Baking To cook food by dry heat without direct exposure to a flame, typically in an oven or on a hot surface Cookies!!! Cupcakes!!!! Muffins!! Doughnuts!!! Chemical reactions Flour Flour gives the baked item most of the bulk. Yeast Yeast (a plant) consumes starch and sugars, releasing CO2, alcohol, and sugars. The CO2 bubbles give the dough a fluffy texture. Fat Fat helps prevent the CO2 bubbles from escaping from the mixture too soon and gives a softer texture. Sugar To improve it's action, it gives a direct food source for the yeast. Vitamin C Shortens the time for the dough to mature. Baking soda Produces a strong base and releases CO2.
NaHCO3 + CH3COOH => CH3COO-Na+ + H2O + CO2 Baking powder Baking powder is baking soda with acid added. It produces more CO2.
Egg Beaten egg white (like fat) helps prevent the gas bubbles from escaping. Salt Salt adds flavor, and strengthens soft fat and sugar mixtures.