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Higher Chemistry > Unit 2 : Skin Care > Flashcards

Unit 2 : Skin Care Flashcards

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1
Q

Wht is Ultraviolet (UV) radiation

A

Ultraviolet (UV) radiation is a high-energy form of EM radiation and is present in sunlight.

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2
Q

What happens when exposed to UV light?

A

Expsoure to UV light provides sufficicient energy for bonds to be broken within molecules.
UV light causes sunburn and accelerates aging of skin.Sun-block applied to your skin prevents UV light reaching the skin.

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3
Q

What are free radicals?

A

Free radicals are highly reactive atoms that have one unpaired electron.

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4
Q

How are Free radicals formed?

A

Free radiclas can be formed when a covalent bonds is broken down by enery supplied by UV light.

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5
Q

What is free radical scavengers?

A

Free-radical scavengers are molecules that react with free radicals to form stable molecules.
prevents free radical chains from occurring

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6
Q

List three everyday item free radical scavengers are added to

A

Cosmetics
Foods
Plastics

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Higher Chemistry (20 decks)

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