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Introduction to Biochemistry A (YEAR 1) > (Wk4) Chemical Reactions > Flashcards

(Wk4) Chemical Reactions Flashcards

1
Q

What is Heterolysis?

A

When the pair of bonding valence electrons of a covalent bond move together.

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2
Q

What is Homolysis?

A

When the pair of bonding valance electrons of a covalent bond move separately.

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3
Q

What is a Nucleophile?

A

An electron rich species that is attracted to a positive centre hence carries a full/partial negative charge. It can DONATE a pair of electrons to form a covalent bond.

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4
Q

What is an Electrophile?

A

An electron-poor molecule that is attracted to regions of high electron density. They can accept an electron pair from a nucleophile and share it with a nucleophile to form a covalent bond.

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5
Q

What is meant by Bond Fission?

A

Bond Breaking

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6
Q

What do Curly arrows show?

A

The direction the electrons are moving.

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7
Q

What are Free Radicals?

A

An atom that has an unpaired electron. They are high in energy and are highly reactive.

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8
Q

What are the 3 mechanisms in Free Radical Substitution?

A

Initiation, Propagation and Termination

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Introduction to Biochemistry A (YEAR 1) (4 decks)

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