LHS Water

T14 - Water has an uneven distribution of charges across the molecule.  Which property is being described?

• density
• polarity
• capillary action
• specific heat

T14 - What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

T14 - A molecule with electrically charged areas is called a _______________.

• magnet
• polar molecule
• solution
• electrical molecule

T14 - The chemical compound of water is

• HO
• H₂O
• H₃O
• HO₂

T14 - Why is the Oxygen portion of a water molecule negative?

• Electrons spend less time orbiting the smaller oxygen atom
• Electrons spend more time orbiting the larger oxygen atom
• Oxygen is always negative because it is an unstable element
• The oxygen portion is positive not negative

T15 - bond created by the weak attraction of a slightly positive hydrogen atom to a slightly negative portion of another molecule

• polar molecule
• solution
• adhesion
• hydrogen bond

T15 - What type of bond is depicted in the image holding the oxygen to the hydrogen within a water molecule

• Covalent
• Ionic
• Hydrogen

T15 - Attractions between different water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

T16 - Capillary action is the result of adhesion and cohesion. Which aspect of water is responsible for this?

• Nonpolar covalent bonds that enable water to dissolve other substances
  
• Polar covalent bonds that join molecules of water to other substances
• Hydrogen bonds between water and another substance
• Ionic bonds that enable electrons to flow through water and into another substance

T16 - What property of water allows it to be such a versatile solvent that it is often called the "universal solvent?"

• Purity
• Polarity and cohesion
• High heat capacity
• Expansion upon freezing