SI 1/28

Which of the following is NOT true about hydrogen bonds?

• They are covalent bonds between hydrogen and an electronegative atom like N or O

• They contribute the high specific heat of H2O

• They weak individually

• They are similar to Van der Waals forces

Which of the following is an example of a covalent bond? Choose all that apply.

• A bond between C and H

• A bond between Na and Cl

• A bond between Na and the nitrate ion

• A bond between C and N

Tags

NGSS.HS-PS1-1

What is the atomic number of Carbon?

• 12.011

• 6

• 4

• 14.01

How many bonds can carbon make?

• 4 ionic bonds

• 6 ionic bonds

• 4 covalent bonds

• 6 covalent bonds

Tags

NGSS.HS-LS1-6

Why might oxygen be known to “steal” electrons and play the role of final electron acceptor in metabolic reactions?

• Oxygen has 6 valence electrons

• Oxygen is very electronegative

• Oxygen can form strong hydrogen bonds

• Oxygen is in water which dissolves many ions

Of the following bonds which is most likely the SECOND strongest type of intermolecular force?

• Van Der Waals forces aka London Dispersion forces

• Hydrogen Bonds

• Polar covalent bond

• Ionic bond

You have a sample of liquid propane C3H8 in one beaker, and liquid hexane C6H14, in another. Which compound do you think would experience more INTERmolecular forces, and what is the name of this force?

• Propane, hydrogen bonding 

• Hexane, covalent bonding 

• Propane, van der waals forces 

• Hexane van der waals forces 

While carbon is abundant on earth, it is theoretically possible for other elements to form the backbone of “organic” molecules. Which of the following, if abundant on another planet could replace the role of carbon BEST?

• Sulfur

• Silicon

• Phosphorous

• Boron

Which of the following functional groups can hydrogen bond with another molecule of itself? Select all that apply.

• Phosphate

• Hydroxyl

• Carboxylic Acid

• Carbonyl

Blood is primarily made up of water and dissolved ions and polar functional groups. If you were making synthetic blood, which of the following would be the WORST choice of solvent?

• Ethanol, C2H6O

• Hexane, C6H14

• Acetonitrile, C2H3N

• All of the above would be good substitutes