Understanding Chemical Bonds and Intermolecular Forces

What causes the oxygen atom in a water molecule to become slightly negative?

• The presence of more protons in oxygen

• The sharing of electrons equally

• The higher electronegativity of oxygen

• The transfer of electrons to hydrogen

Which of the following is an example of a non-polar covalent bond?

• Hydrogen chloride

• Water

• Carbon dioxide

• Sodium chloride

How do polar covalent bonds differ from non-polar covalent bonds?

• Non-polar bonds are stronger than ionic bonds

• Non-polar bonds create dipoles

• Polar bonds share electrons equally

• Polar bonds involve unequal sharing of electrons

What is the role of hydrogen bonds in water?

• They make water a poor solvent

• They cause water to evaporate quickly

• They are responsible for water's high surface tension

• They make water a good conductor of electricity

Which statement about intermolecular forces is true?

• They are irrelevant in polar substances

• They do not affect the state of matter

• They are weaker than ionic bonds but still significant

• They are stronger than covalent bonds