FEED THE WORLD L4 Flashcards
(44 cards)
What are carbohydrates made from?
Carbon , hydrogen and oxygen
How to test for carbohydrates
Iodine or Benedict’s reagent
What does iodine test for
Starch
What does Benedict’s test for
Glucose, maltose and fructose
What’s the colour change in iodine
Orange ->blue/black
What’s the colour change in Benedict’s test
Blue->brick red
What do carbohydrates provide us
Energy
What are the two types of carbohydrates
Starch and sugar
What is an isomer
A compound with the same molecular formula but a different structure
What sugar does Benedict’s solution not test for
Sucrose as it’s too complex
What are glucose and fructose
Monosaccharides and isomers of each other
What is glucose and fructose’s formula
C6H12O6
Maltose and sucrose are what ?
Disaccharides and are isomers of each other
What is sucrose’s and maltose’s formula
C12H22O11
How is sucrose formed
Sucrose is formed in a condensation reaction when glucose and fructose combine
What’s the formula for sucrose
C12H22O11+H2O
What’s the formula for starch
(C6H10O5)n
What are the four main elements in your body
Carbon, hydrogen, oxygen and nitrogen
What are the 2 compounds that are important to our diet
Carbohydrates and fat
What is calcium necessary for
Healthy bones and teeth
What is needed for red blood cells
Iron
What helps carry oxygen around the body
Iron
Is sugar soluble
Yes
Is starch soluble
No
