Understanding Chemical Bonds

Why do atoms form chemical bonds?

• To achieve a more reactive state

• To decrease their atomic mass

• To become more stable and less reactive

• To increase their atomic number

What happens to sodium and chlorine atoms in an ionic bond?

• Sodium gains electrons and chlorine loses electrons

• Both sodium and chlorine share electrons equally

• Sodium loses electrons and chlorine gains electrons

• Both sodium and chlorine become neutral atoms

What is a characteristic of polar covalent bonds?

• Electrons form a sea around metal atoms

• Electrons are more attracted to one atom than the other

• Electrons are transferred completely from one atom to another

• Electrons are shared equally between atoms

Which of the following is true about nonpolar covalent bonds?

• They involve the transfer of electrons

• They form a sea of electrons

• They occur between atoms with different electronegativities

• They occur between atoms with similar electronegativities

Why are metals good conductors of electricity?

• Because they are non-reactive

• Because they have a sea of electrons that flow freely

• Because they have a high density

• Because they form ionic bonds