Water

• What percentage of a cell's contents is water?

  About 80%
• What is one function of water in metabolic reactions?

  It acts as a metabolite in reactions
• Why is water considered a solvent?

  Many substances dissolve in it
• How does water help with temperature control?

  It has high specific heat capacity
• What property of water helps with transport in plants?

  Water molecules are cohesive
• Why is water considered vital to living organisms?

  It makes up about 80% of a cell's contents
• What are the important functions of water in living organisms?

  • Metabolite in metabolic reactions
  • Solvent for metabolic reactions
  • Helps with temperature control
  • Cohesive properties aid transport
• What is the chemical formula of a water molecule?

  H₂O
• What charge does the oxygen atom in a water molecule have?

  Slight negative charge
• What type of molecule is water due to its charge distribution?

  Polar molecule
• What is hydrogen bonding in water molecules?

  Attraction between slightly charged atoms
• How does water act as a buffer?

  It can donate or accept H⁺ ions
• Why is water a good solvent?

  It dissolves ionic and polar substances
• What happens to ions when they dissolve in water?

  They get surrounded by water molecules
• What are the useful properties of water?

  • High latent heat of vaporisation
  • High specific heat capacity
  • Cohesion between water molecules
  • Acts as a good solvent
• What is the significance of water's high latent heat of vaporisation?

  It helps organisms cool down through evaporation
• Why does water have a high specific heat capacity?

  Hydrogen bonds absorb a lot of energy
• How does water's high specific heat capacity benefit organisms?

  It prevents rapid temperature changes
• What is cohesion in water molecules?

  Attraction between molecules of the same type
• How does cohesion help water transport in plants?

  It allows water to flow in columns
• Why do water droplets form on surfaces?

  Due to high surface tension from cohesion
• What are the key properties of water that are essential for life?

  • High latent heat of vaporisation
  • High specific heat capacity
  • Cohesion and adhesion properties
  • Ability to act as a solvent