Hydrogen Bond

The dashed lines represent

• hydrogen bonds

• covalent bonds

• ionic bonds

• delta

The nucleic acid DNA is double stranded. The two strands are held together by

• hydrogen bonds

• covalent bonds

• proteins

• fats

The water molecules are arranged

• by size

• with opposites away from each other

• with opposites next to each other

• randomly

Tags

NGSS.HS-PS1-3

Polar molecules

• have even charge density

• are symmetric

• form hydrogen bonds

• have 10 atoms per molecule

What type of bond is primarily responsible for the unique properties of water, including its high specific heat and surface tension?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

Explain how hydrogen bonding in water contributes to its high specific heat capacity.

• Hydrogen bonds store heat, releasing it slowly as they break

• Hydrogen bonds prevent any heat absorption

• Hydrogen bonds increase the kinetic energy of water molecules

• Hydrogen bonds create a crystalline structure in water

Tags

DOK Level 2: Skill/Concept

Why does water have a high surface tension compared to most other liquids?

• Because of its low molecular weight

• Due to the hydrogen bonds between water molecules

• Because of its high specific heat capacity

• Due to the covalent bonds within the water molecule

What is a hydrogen bond?

• A bond between two hydrogen atoms

• A bond between a hydrogen atom and an electronegative atom

• A bond between two electronegative atoms

• A bond between two oxygen atoms

Which atoms are commonly involved in hydrogen bonding?

• Hydrogen and oxygen

• Hydrogen and nitrogen

• Oxygen and nitrogen

• Oxygen and carbon

How many hydrogen bonds can a water molecule form?

• One

• Two

• Three

• Four

Tags

NGSS.HS-ESS2-5