Exploring Polar and Non-Polar Covalent Bonds

What causes polarity in a molecule?

• Presence of hydrogen bonds

• Unequal sharing of electrons

• Equal sharing of electrons

• Absence of covalent bonds

What type of bond is formed when two atoms share electrons equally?

• Polar covalent bond

• Nonpolar covalent bond

• Ionic bond

• Hydrogen bond

Which of the following pairs always form nonpolar bonds?

• Hydrogen and Nitrogen

• Carbon and Oxygen

• Carbon and Hydrogen

• Oxygen and Nitrogen

Why is water considered a polar molecule?

• It has a symmetrical shape

• Oxygen and hydrogen share electrons equally

• Oxygen has a higher electronegativity than hydrogen

• It contains only nonpolar bonds

Which of the following is a nonpolar molecule?

• Stearic acid

• Glucose

• Water

• Protein

What makes fats nonpolar?

• Presence of oxygen atoms

• Long chains of carbon and hydrogen

• High electronegativity of carbon

• Presence of nitrogen atoms

Which major class of molecules in the body is nonpolar?

• Proteins

• Nucleic acids

• Fats

• Carbohydrates

Why are carbohydrates considered polar molecules?

• They contain only carbon and hydrogen

• They have oxygen attached to each carbon

• They are composed of long chains of carbon

• They do not interact with water

Which of the following is a polar molecule?

• Stearic acid

• Protein

• Carbon dioxide

• Oxygen

What is the main characteristic of nonpolar molecules in the body?

• They contain nitrogen atoms

• They do not mix well with water

• They have high electronegativity

• They mix well with water