⚗️ Chemicals Used as Food Materials
Grade 6 Science · Chapter 10
Baking Soda
Sodium Bicarbonate (NaHCO₃)
Makes bread, cakes and biscuits soft and fluffy. When heated it releases CO₂ gas — tiny bubbles that puff up the dough!
Used in foodCitric Acid
Found in lemons, oranges & amla
Gives fruits their sour taste. It is a natural chemical substance that is safe to eat and used as a flavouring in drinks and sweets.
Natural acidCommon Salt
Sodium Chloride (NaCl)
Dissolved in sea water and found underground. Our body needs it to work properly. Too much can cause high blood pressure.
Use in moderationSugar
Sucrose (C₁₂H₂₂O₁₁)
A chemical substance found in tea, sweets and fruit. It gives us energy but too much can cause tooth decay and other health problems.
Use in moderationIodised Salt
NaCl + Potassium Iodate
Salt with iodine added to prevent goitre and mental problems. Children especially need iodine to grow smart and healthy.
Important for kidsVinegar
Acetic Acid (CH₃COOH)
Used to preserve pickles, fish and meat so they don't spoil. It is an acid that stops harmful bacteria from growing in food.
Preservative