Glucose Flashcards
1
Q
Aim
A
To observe what color change takes place in Fehling’s A and B solutions in the presence or absence of glucose
2
Q
Hypothesis
A
Glucose will cause Fehling’s A and B solutions to turn from a blue to an orange color and sodium bicarbonate won’t present any color change
3
Q
What color does glucose turn when in the presence of Fehling’s A and B solution?
A
It turns from a blue to a a green and finally to an orange/red color
4
Q
What are monosaccharides?
A
- Simplest form of carbohydrates and composed between 3-7 carbon atoms
- Combined to form disaccharides and polysaccharides
5
Q
what is respiration?
A
Breakdown of a fuel like glucose to produce energy,water and carbon dioxide
6
Q
What is reduction?
A
It is the gaining of electrons by a substance
7
Q
What is a reducing sugar and how is this property used as a basis to test for reducing sugars?
A
- Able to donate electrons to other substances and bringing about the reduction in a substance
- In this test glucose donates copper ions to Fehling’s solution
- In the process of gaining electrons the solution turns from blue to red
