Chemistry is the study of the behavior and composition of matter. All foods
are made up of chemical substance which undergoes chemical changes when cooking 　 1．_______
in an oven or digested within the body. The cooking of meat and vegetables induce　2．_______
chemical changes, making it more delicious; similarly the leavening action of　　　3．_______
baking powder is a straightforward chemical change, as is the conversion of
starch into sweet sugars by digestion.
　　Cookery is a science requiring for a knowledge of chemistry.　　　　　　　　　 4．_______
This is evident from the variety of cooking products and food additives available
as cooking oils, fats, colorings, sweeteners, tenderizers, flavorings, scream-
ing agents, preservatives, etc. Each is carefully prepared before painstaking　　　5．_______
research.
　　It is therefore essential for trained cookers to understand　　　　　　　　　　6．_______
chemical science in order to appreciate the chemistry nature of foods　　　　　 　 7．_______
and the changes achieving on cooking. Homeworkers should also　　　　　　　 　　　 8．_______
know cleansing agents and textiles used in the home and how the latter　　　　　　 9．_______
responds to the effects of heat, light, water, and chemical cleansing agents.　　 10．_______