Liên kết hydro

What is the basis of hydrogen bond?

• Attraction forces between hydrogen atom bonded with another hydrogen atom

• Attraction forces between hydrogen atom bonded with a high electronegativity atom (F, O, N)

• Attraction forces between hydrogen atom bonded with a high electronegativity atom (F, O, N) with atom (F, O, N) of another molecule

• Attraction forces between hydrogen atom with another hydrogen atom of another molecule

Tags

NGSS.HS-PS1-3

Which formation of hydrogen bonds in hydrogen fluoride, HF do you think is correct?

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Can ammonia, NH₃ form hydrogen bonds?

• Yes

• No

When hair is dry, protein molecules in the hair structure form hydrogen bonds with...

• other protein molecules in the same hair structure

• water molecules, H₂O

• other protein molecules from another hair structure

• water molecules, H₂O which also forms hydrogen bonds with protein molecules from another hair structure

When hair is wet, protein molecules in the hair structure form hydrogen bonds with...

• other protein molecules in the same hair structure

• water molecules, H₂O

• other protein molecules from another hair structure

• water molecules, H₂O which also forms hydrogen bonds with protein molecules from another hair structure

How do you overcome a difficulty in turning the pages of a book when the pages stick together?

• Ripping the pages until they are separated

• Shake the book until the pages separate

• Lick your finger before turning the pages

• Blow the pages as hard as you can

How can hydrogen bonds form between cellulose in paper and water molecule, H₂O on the finger?

• By pouring a bucket of water on the paper

• Water molecules, H₂O on the wet finger will form hydrogen bonds with cellulose in paper

Can chlorine, Cl₂ form hydrogen bonds?

• Yes

• No

Which of these compounds will have the highest boiling point?

• Br₂

• NaCl

• C₃H₇OH

• Cl₂

Why can compounds that can form hydrogen bonds have higher boiling points than compounds that cannot form hydrogen bonds?

• Compounds that can form hydrogen bonds need to overcome weak Van der Waals attraction forces

• Compounds that can form hydrogen bonds need to overcome strong hydrogen bonds

• Compounds that can form hydrogen bonds need to overcome weak Van der Waals attraction forces and strong hydrogen bonds