Food Carbohydrates Proteins Minerals Food Groups Fats and

Food

Carbohydrates Proteins Minerals Food Groups Fats and Oils Vitamins

Carbohydrates • Starch and Sugars • Also fibre (Called roughage-to make you gooooo!) • Used for energy

Test for Starch Add Iodine solution Solution Containing Starch Blue-black colour appears

Test for Glucose Heat it up Solution Containing Reducing Sugar Orange colour appears

Proteins • Meat, Eggs, Cheese and Beans. • Used to repair the body and grow new cells.

Test for Protein Sodium Hydroxide Dilute Solution Containing Protein Copper (II) Sulphate Solution Violet Colour

Fats and Oils • Converted to energy • Also used for insulation • Brown paper test – Rub it on Clear patch on brown paper proves food contains oils Food

Minerals • Simple elements needed for specific functions Calcium for………. Teeth and Bones Iron for…………. Blood Cells

Vitamins Game Illness Vitamin Source A Carrots and liver B Wholemeal flour and cereals C Fresh veg and fruit D Sunlight Scurvy - sailors in 18 th century Ricketts – Millworkers working long hours Beri – Poor rice farmers in far east Night Blindness – Famine victims

Vitamins • More complicated chemicals used in the body • Vitamin C……. . Skin (Lack Scurvy) • Vitamin B 1……Nerves (Beri) • Vitamin D……. . Bones (Rickets)

H/W Copy and complete

Food Pyramid A balanced diet includes all the food groups in the proportions of the pyramid

Food Labels

Cholesterol A mixture of bad food with some Inherited problems can lead to a build up of plaque Slow blood flow Chest grabbing Serious health problems

Proof - Food has energy Burn food (A peanut infact) it heats up water Must be an energy conversion FOOD HAS ENERGY Peanut Heat

Summary • • • 5 food groups Cabohydrates-Sugars, Starch and fibre Test starch Iodine turns blue/black Test Glucose Benedicts soln- Orange (Heated) Protein growth and repair Test Na. OH/Cu. SO 4 goes violet Vitamins C for skin (Scurvy) Minerals Ca for teeth and bones Pyramid of needs Burning peanut raises temperature so food has energy

H/W • Draw up a table of all your food in a day and then breakdown all the parts Food Energy Carbs Sugar Fat Protein