WorksheetsChapter 4: The Chemistry of Carbon
Total questions: 15
Worksheet time: 13mins
The element present in all organic molecules is _____.
hydrogen
oxygen
carbon
nitrogen
Why is carbon so important in biology?
It is a common element on Earth.
It has very little electronegativity, making it a good electron donor.
It bonds to only a few other elements.
It can form a variety of carbon skeletons and host functional groups.
How many electron pairs does carbon share to complete its valence shell?
2
3
4
8
Why are hydrocarbons insoluble in water?
The majority of their bonds are polar covalent carbon-to-hydrogen linkages.
The majority of their bonds are nonpolar covalent carbon-to-hydrogen linkages.
They exhibit considerable molecular complexity and diversity.
They are less dense than water.
Which of the following statements correctly describes cis-trans isomers?
They have variations in arrangement around a double bond.
They have an asymmetric carbon that makes them mirror images.
They have the same chemical properties.
They have different molecular formulas.
Organic molecules with only hydrogens and five carbon atoms cannot _____.
have a branching carbon skeleton
have different combinations of double bonds between carbon atoms
have different positions of double bonds between carbon atoms
form enantiomers
The two molecules shown in the figure below are best described as _____.
enantiomers
structural isomers
cis-trans isomers
chain length isomers
The figure shows the structures of glucose and fructose. These two molecules differ in the _____.
number of carbon, hydrogen, and oxygen atoms
types of carbon, hydrogen, and oxygen atoms
arrangement of carbon, hydrogen, and oxygen atoms
number of oxygen atoms joined to carbon atoms by double covalent bonds
The two molecules shown in the figure are best described as ______.
enantiomers
radioactive isotopes
structural isomers
cis-trans isomers
Which of the pairs of molecular structures shown depict enantiomers (enantiomeric forms) of the same molecule?
Which of the functional groups below acts most like an acid in water?
amino
carbonyl
carboxyl
hydroxyl
What is the name of the functional group shown in the figure?
carbonyl
ketone
aldehyde
carboxyl
Which of the structures illustrated is an impossible covalently bonded molecule?
A
B
C
D
Which molecule shown has a carbonyl functional group in the form of a ketone?
A
B
C
D
Which molecule shown above can increase the concentration of hydrogen ions in a solution and is, therefore, an organic acid?
A
B
C
D
