Ib Biology Water

Name the intermolecular bond between water molecules.

• Ionic bond

• Hydrogen bond

• Covalent bond

• Peptide bond

Which term describes the way in which water molecules are attracted to other water molecules?

• Cohesion

• Adhesion

• Surface tension

• Capillary action

Tags

NGSS.HS-ESS2-5

Which term describes the way in which water molecules are attracted to other molecules?

• Cohesion

• Adhesion

• Surface tension

• Capillary action

Which elements make up water?

• Two oxygen, two hydrogen

• Two oxygen, one hydrogen

• One oxygen, one hydrogen

• One oxygen, two hydrogen

Tags

NGSS.MS-PS1-1

Water molecules stick together forming a 'film' around a droplet or at the surface of a body of water. Name this phenomenon.

• Cohesion

• Adhesion

• Surface tension

• Capillary action

What name is given to a molecule which has a positive and a negative charge in different areas?

• Polar

• Non-polar

• Hydrophobic

• Hydrophilic

Tags

NGSS.HS-PS1-2

Which property of water makes aquatic environments thermally stable?

Tags

NGSS.HS-ESS2-5

Identify one importance of cohesion for animals and for plants.

• Surface tension creates habitats for pond-skaters and other invertebrates.

• Floating ice insulates water beneath it.

• Water enters plant roots by osmosis.

• As water molecules evaporate from leaves, they pull other water molecules up from the roots during transpiration.

Why is water's high heat of vaporisation useful for animals?

• helps them cool down by evaporating sweat

• helps them stay warm for longer

• helps them stay hydrated for longer

Tags

NGSS.MS-LS2-3

NGSS.MS-PS3-4

Which molecules can easily dissolve in water/blood?

• lipids

• ions like salts

• carbs

• proteins