Which of the following statements about the properties of water is false? a The amount of energy required to change one gram of liquid water to a gas is higher than many other liquids. b When ionic compounds are added to water, the hydrogen bonds of water strengthen the ionic bonds. c Hydrogen bonding results in attractive intramolecular forces between water molecules. d The oxygen and hydrogen of a single water molecule are held together with a covalent bond.

Which of the following factors is responsible for the fact that water is a liquid at room temperature?

Select one:

a. Covalent O-H bonds

b. Ionic bonds

c. Hydrogen bonds

d. Hydrophobic bonding between water molecules

e. The molecular weight of water

Water molecules have one oxygen atom that is moreelectronegative than the two hydrogen atoms bound to it. As aresult, which type of bonding holds the atoms within one watermolecule together?

A. non-polar covalent bonding

B. polar covalent bonding

C. Ionic bonding

D. hydrogen bonds