Answer to Question #182252 in General Chemistry for Homos

Question

In heat fusion, observe how each material reacts with the heat that you applied.

a. sugar/salt

b. granules of food seasoning (magic sarap)

Answer 1

a) Sugar is  made of carbon, hydrogen and oxygen atoms. When heated over a candle, these elements react with the fire to turn into a liquid. The heat causes the sugar's atoms to combine with the oxygen in the air, forming new groups of atoms. Energy is released in this chemical reaction in form of smoke and black soot.

b) This brings about development of rancid flavour and rancid aroma that makes the foods unpalatable and unacceptable. Oxidative rancidity is a major cause of food quality deterioration and product rejection and can lead to the formation of undesirable off-flavours and off-odours as well as harmful compounds.