Chemistry - Food and Additives A quiz to test knowledge on gcse chemistry food and additives. 3.0 / 5 based on 1 rating ? BiologyGCSEOCR Created by: Claire SaundersCreated on: 11-11-12 17:02 What sort of a change is cooking food? A chemical change. 1 of 7 What is the process called when a protein molecule straightens out? Denaturing. 2 of 7 What happens to starch grains when they are cooked? The cells rupture and the grains swell up and spread. 3 of 7 What do anitoxidants do? They stop food from reacting with oxygen. 4 of 7 What is the formula for baking powder? Sodium hydrogen carbonate = sodium carbonate = carbon dioxide +water. 5 of 7 What is the balanced equation for baking powder? 2NaHCO3 - Na2 CO3 + CO2 +H2O 6 of 7 What do anitoxidants, food colours, emulsifiers and flavour enhancers do? They help to preserve and enhance the colour or taste of food. 7 of 7
Comments
No comments have yet been made