test ques1 Flashcards
1
Q
Describe how a saturated fatty acid differs in molecular structure from an unsaturated fatty acid (2)
A
-absence of a double bond
-in the hydrocarbon chain
2
Q
Explain how cellulose gives cotton its strength (2)
A
-unbranched chain
-form microfibrils
-h bonds holds chain together
3
Q
Describe test for lipid and positive result (2)
A
-Mix with ethanol than water
-White emulsion
4
Q
-Describe 2 ways cellulose is similar to starch
A
-Both are polymers
-Joined by condensation
5
Q
Explain why hydrogen bonds are important in cellulose (2)
A
-Holds chains
-H bonds are strong in large numbers
