Chemistry

Topics: Acid, Chemical reaction, Carbon dioxide Pages: 2 (470 words) Published: August 24, 2013
Baking Project
There are several chemical reactions taking place in the general baking of cakes. Every ingredient has its own function and causes a different reaction Synthesis:
* Egg yolks (modify molecule’s structure) helps the oil-based and water-based components of the cake mix together. When eggs are cooked, the protein molecules become uncurled when exposed to heat and create new molecular bonds with other nearby protein molecules. When the egg is completely cooked, it helps form a protein network that gives the cake structure. Denaturing of egg white when it cooks is also a chemical reaction (if this does not happen the bread will have not have shape)

Baking powder:
Baking powder has two chemical reactions which are the following: 1. When it is mixed with wet ingredients it reacts to add co2 2. But that is not all when it hits the oven it reacts to the heat as well.

Double Replacement:

Baking soda (NaHCO3) reacts with acidic substances (HA) in cake batter in a double replacement reaction:    ReactantProduct
NaHCO3      +   HA     -->    Na A       +   H (HCO3) H(HCO3) is more commonly known as H2CO3. 
Decompose:
* Gas is Produced
* Yeast breaks down glucose to release CO2 gas, decomposition * Baking soda Releases CO2 according to the equation
2NaHCO3 → Na2CO3 + CO2 + H2O
However, as this also produces a strong base, Na2CO3, which has to be neutralized, baking powder is usually used instead. Baking powder is baking soda with acid added. This neutralizes the base and produces more CO2 according to the following equation:

ReactantProduct
NaHCO3 + H+ → Na+ + H2O + CO2
In baking powder, the citric acid is the dry ingredient that reacts with the baking soda, the CO2 gas is used in making baked products raise. Citric acid+ NaHCO3---> CO2 gas + water + sodium citrate (if this does not happen the bread will have not raise)

Flour: absorbs the liquid ingredients and keeps the...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Essay about chemistry
  • Chemistry Essay
  • Essay on Chemistry Chapter2
  • Essay about Firework Chemistry
  • OCR Gateway Chemistry controlled assessment research Research Paper
  • Chemistry-Chemical Energetics Essay
  • Module 4 DBA notes Essay
  • chemistry Essay

Become a StudyMode Member

Sign Up - It's Free