1.1 Structure of Water and Hydrogen Bonding

Cards (53)

  • What is the structure of a water molecule?
    One oxygen, two hydrogen
  • Hydrogen bonding occurs between water molecules due to their polarity.
  • The oxygen atom in a water molecule is more electronegative
  • What type of charge does the oxygen atom in a water molecule have?
    Partial negative (δ⁻)
  • The high boiling point of water is due to the energy required to break hydrogen bonds.
  • What property of water allows insects to walk on its surface?
    High surface tension
  • Water's high specific heat capacity allows it to absorb a large amount of heat
  • Hydrogen bonds are stronger than covalent bonds.
    False
  • What is the molecular shape of a water molecule?
    Bent
  • The partial positive charge on hydrogen atoms is attracted to the partial negative charge on oxygen
  • Why does water have a high boiling point?
    Hydrogen bonds require energy
  • Water's high specific heat capacity helps stabilize temperatures in living cells.
  • Match the property of water with its explanation:
    Cohesion ↔️ Water molecules stick together
    Adhesion ↔️ Water sticks to other surfaces
    High Specific Heat ↔️ Requires energy to break bonds
  • Water's evaporative cooling helps dissipate excess heat
  • The properties of water arising from hydrogen bonding are crucial for supporting life processes.
  • What property of water allows it to move up plant stems through capillary action?
    Cohesion
  • Cohesion in water molecules is essential for capillary action
  • Water's high specific heat helps regulate body temperature in animals.
  • Match the property of water with its relevance to life:
    High Specific Heat ↔️ Stabilizes body temperature
    Cohesion ↔️ Allows water to move up plant stems
    Evaporative Cooling ↔️ Dissipates excess heat
  • What type of arrangement does a water molecule have?
    Tetrahedral
  • Hydrogen bonds are weak intermolecular forces compared to covalent bonds.
  • What type of charge is on the oxygen atom in a water molecule?
    Partial negative
  • What is the shape of a water molecule due to its tetrahedral arrangement?
    Bent
  • The oxygen atom in a water molecule is more electronegative
  • Hydrogen bonding in water is stronger than covalent bonding.
    False
  • What is the type of charge on the hydrogen atoms in a water molecule that allows it to form hydrogen bonds?
    Partial positive
  • The high boiling point of water is due to the energy needed to break hydrogen bonds
  • The high surface tension of water is caused by hydrogen bonding between water molecules.
  • Why does water have a high specific heat capacity?
    Hydrogen bonds require energy
  • Cohesion in water refers to its ability to stick to itself
  • Match the property of water with its explanation:
    High boiling point ↔️ Hydrogen bonds require more energy to break
    High surface tension ↔️ Hydrogen bonds hold water molecules together at the surface
    High specific heat capacity ↔️ Hydrogen bonds absorb heat
    Cohesion and adhesion ↔️ Water sticks to itself and other surfaces
  • Water's unique properties arise from the polarity of its molecules.
  • What is the role of cohesion in water's movement through plant stems?
    Capillary action
  • Adhesion in water allows it to stick to other surfaces
  • Water's surface tension allows insects to walk on its surface.
  • How does water's high specific heat help stabilize temperatures in cells?
    Absorbs excess heat
  • Evaporative cooling occurs when water absorbs heat during evaporation
  • Water's properties arising from hydrogen bonding are essential for supporting life processes.
  • What property of water allows it to move up plant stems through capillary action?
    Cohesion
  • Water's adhesion enables it to adhere to surfaces