A covalent bond is likely to be polar when ________. Correct
Answers one of the atoms sharing electrons is more
electronegative than the other atom
A neutral atom has two, eight, and eight electrons in its first,
second, and third energy levels. This information ________.
Correct Answers does not tell us about the atomic mass of the
element
A salamander relies on hydrogen bonding to stick to various
surfaces. Therefore, a salamander would have the greatest
difficulty clinging to a ________. Correct Answers surface of
hydrocarbons
A solution contains 0.0000001 (10-7) moles of hydrogen ions
[H+] per liter. Which of the following best describes this
solution? Correct Answers neutral
Atoms have no electric charge because they have ________.
Correct Answers an equal number of protons and neutrons
Bonds between two atoms that are equally electronegative are
________. Correct Answers Non Polar Covalent Bonds
Enzymes are a type of ________. Correct Answers protein
How do phospholipids interact with water molecules? Correct
Answers The polar heads interact with water molecules, the
nonpolar tails do not
, How many electron pairs are shared between the carbon atoms
in a molecule that has the formula C2H4? Correct Answers two
How many molecules of water are released during the
polymerization of a 20 monomer-long cellulose molecule?
Correct Answers 19
If an atom gains or loses one or more electrons to another atom,
does its atomic number change? Why or why not? Correct
Answers no because the number of neutrons change
In carbohydrates, the ratio of hydrogen (H) to oxygen (O) is
________. Correct Answers 2:1
Oxygen has an atomic number of 8 and, most commonly, a mass
number of 16. Thus, what is the atomic mass of an oxygen
atom? Correct Answers Approximately 16 daltons
People who are lactose intolerant cannot extract energy from
milk because ________. Correct Answers they are missing the
bacteria that can digest lactose
Phospholipids and triglycerides both ________. Correct
Answers have glycerol
Proteins are diverse molecules that perform a wide variety of
functions. Which of the following is not a typical function of
proteins? Correct Answers Energy Storage
Refer to the following figure to answer the questions below.
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