Assignment # 1: Properties of Water

What causes water molecules to have an uneven distribution of charge?

• Hydrogen bonding

• Polarity

• Cohesion

• Adhesion

Why is water able to dissolve salts and sugars?

• Because they are ionic

• Because they are hydrophobic

• Because they are polar

• Because they are non-polar

What is the biological relevance of water's polarity?

• It insulates aquatic ecosystems

• It allows small organisms to walk on water

• It helps transport nutrients and waste in cells

• It stabilizes DNA structures

Tags

NGSS.MS-LS2-3

What is a hydrogen bond?

• A strong covalent bond

• A type of ionic bond

• A weak attraction between water molecules

• A bond between hydrogen and carbon

Tags

NGSS.MS-ESS2-4

Which property of water is responsible for surface tension?

• Specific heat capacity

• Cohesion

• Polarity

• Adhesion

What is the biological relevance of cohesion in plants?

• It assists in digestion

• It helps transport water through xylem vessels

• It stabilizes protein structures

• It helps in nutrient transport in blood vessels

Tags

NGSS.MS-LS2-3

What allows small organisms to walk on water?

• Capillary action

• Adhesion

• Surface tension

• High specific heat

What is the role of adhesion in plants?

• It stabilizes DNA structures

• It creates surface tension

• It insulates aquatic ecosystems

• It helps water climb surfaces and spread out

Tags

NGSS.MS-ESS2-4

What is capillary action?

• The movement of water up narrow tubes

• The ability of water to dissolve substances

• The high specific heat of water

• The expansion of water upon freezing

Why is water's specific heat capacity important?

• It enables water to act as a solvent

• It creates surface tension

• It stabilizes environments and organisms

• It allows water to dissolve more substances

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4