TESTING FOOD FOR STARCH

CARBOHYDRATES

•Store and provide energy

•Two types of carbohydrates•Starch•Sugar

STARCH

• a very large molecule• numerous sugar molecules chained together• looks like a long twisted chain with many branches sticking out

• starch + iodine = intense blue-purple

SUGAR

• When starch is broken down it produces SUGAR• Produced during the food-making process that takes place in plants

• Sugar + iodine= no color change

MATERIALS

• Send one group member to get…• Dropper filled with iodine. HOLD IT UPSIDE

DOWN!!

• Send another group member to get…• Plate, Orange, Apple, Potato, Bread, Cracker,

Cheese, Butter, Sugar

WHEN YOU ARE DONE, THROW PLATE AWAY THEN ANSWER LAB QUESTIONS

RESULTS

FOOD STARCH PRESENT STARCH NOT PRESENT

Apple

Bread

Butter

Cheese

Cracker

Oranges

Potato

Sugar