soap polarity

How does soap dissolve both water and grease? (choose all that apply)

• the hydrophobic end of soap attracts to water

• the hydrophilic end of soap attracts to water

• the hydrophobic end of soap attracts to grease

• the hydrophilic end of soap attracts to water

How does NaCl dissolve in water? (check all that apply)

• the Na ion is attracted to the hydrogen in the water molecule

• the Cl ion is attracted to the hydrogen in the water molecule

• the Na ion is attracted to the oxygen in the water molecule

• the Cl ion is attracted to the oxygen in the water molecule

Why is the molecule nonpolar?

• There are nonbonding pairs on the central atom.

• There are different types of elements bonded to the central atom.

• There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

What two elements make up water?

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

Why is the molecule polar?

• There are nonbonding pairs on the central atom.

• There are different types of elements bonded to the central atom.

• There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

The electrons in a nonpolar molecule are ...

• shared equally

• shared unequally

• transferred

• None of the Above

The electrons in a polar covalent molecule are ...

• shared equally

• shared unequally

• transferred

• None of the Above

Will this molecule be polar or nonpolar? H₂S

• polar
• nonpolar

Which molecule contains bonds of GREATER polarity?

• H₂O

• H₂Te

• H₂S

• H₂Se

This is an example of a __________ bond.

• non-polar covalent
• polar covalent
• ionic
• metallic