Fragrences and Skin Care Flashcards
1
Q
What are Terpenes?
A
Unsaturated hydrocarbons formed by joining together isoprene units.
2
Q
What is the systematic name of an isoprene unit?
A
2-methlybuta-1,3-diene
3
Q
What are free radicals?
A
Highly reactive atoms that have 1 unpaired electron.
4
Q
When can radicals be formed?
A
When a covalent bond is broken by energy supplied by UV light.
5
Q
What are the 3 stages called when a free radical is formed?
A
Initiation, Propagation and Termination.
6
Q
What are free radical scavengers?
A
Chemicals that react with and destroy free radicals.
7
Q
Give examples of free radical scavengers.
A
Usually vitamins, minerals or enzymes.
8
Q
How do free radical scavengers work?
A
Prevent a chain reaction from occurring.
