Question 1

A widely-used method for determining the structure of molecules is called

Accepted Answer

A)  X-ray photography. 
B)  molecular electrolysis. 
C)  capillary electrophoresis. 
D)  X-ray crystallography. 
E)  molecular microscopy. 
A)  X-ray photography. 
B)  molecular electrolysis. 
C)  capillary electrophoresis. 
D)  X-ray crystallography. 
E)  molecular microscopy.

Question 2

Describe the molecular structure of a benzene ring.

Accepted Answer

A)  six carbon atoms in the shape of a flat hexagon with three longer single bonds and three shorter double bonds 
B)  six carbon atoms in a ring that takes on the three-dimensional shape of a chair 
C)  Six carbon atoms in a ring that takes on the three-dimensional shape of a boat 
D)  Six carbon atoms in the shape of a flat hexagon, each C-C bond is the same length 
A)  six carbon atoms in the shape of a flat hexagon with three longer single bonds and three shorter double bonds 
B)  six carbon atoms in a ring that takes on the three-dimensional shape of a chair 
C)  Six carbon atoms in a ring that takes on the three-dimensional shape of a boat 
D)  Six carbon atoms in the shape of a flat hexagon, each C-C bond is the same length

Question 3

Electrons in the double bonds of a benzene ring are

Accepted Answer

A)  delocalized. 
B)  departmentalized. 
C)  energized. 
D)  resonant. 
E)  quantized. 
A)  delocalized. 
B)  departmentalized. 
C)  energized. 
D)  resonant. 
E)  quantized.

Question 4

Choose the characteristic of saturated fats:

Accepted Answer

A)  tend to be liquid at room temperature 
B)  come mostly from animal sources 
C)  are recommended highly by nutritionists 
D)  all of the above 
E)  none of the above 
A)  tend to be liquid at room temperature 
B)  come mostly from animal sources 
C)  are recommended highly by nutritionists 
D)  all of the above 
E)  none of the above

Question 5

Choose the structure that represents 3-ethyloctane.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 6

A(n) ____________________ fat contains only single covalent bonds between carbon atoms; a(n) ____________________ fat contains at least one double bond joining two carbon atoms.

Accepted Answer

saturated,

Question 7

The following molecule is myrcene, found in lemongrass tea. It has an analgesic (pain-relieving) effect, and is likely responsible for the tea's medicinal properties. Choose the correct chemical formula for myrcene.

Accepted Answer

A)  C8H12 
B)  C8H14 
C)  C10H16 
D)  C10H18 
E)  C10H14 
A)  C8H12 
B)  C8H14 
C)  C10H16 
D)  C10H18 
E)  C10H14

Question 8

In the __________ isomer, two hydrocarbon groups are on opposite sides of a C=C double bond.

Accepted Answer

The answer of In the __________ isomer, two hydrocarbon groups...

Question 9

Identify the number of hydrogen atoms in the following molecule.

Accepted Answer

A)  11 
B)  14 
C)  10 
D)  12 
A)  11 
B)  14 
C)  10 
D)  12

Question 10

Identify the number of hydrogen atoms in the following molecule.

Accepted Answer

A)  11 
B)  16 
C)  12 
D)  21 
A)  11 
B)  16 
C)  12 
D)  21

Question 11

Choose the correct chemical formula in the following molecule.

Accepted Answer

A)  C6H8 
B)  C6H9 
C)  C6H10 
D)  C5H10 
E)  C5H12 
A)  C6H8 
B)  C6H9 
C)  C6H10 
D)  C5H10 
E)  C5H12

Question 12

Where do trans fats come from?

Accepted Answer

A)  consumption of too much sugar along with fatty foods produces them 
B)  They are converted by our bodies from unsaturated fats in our diets. 
C)  They are present naturally in animal fats. 
D)  They are a by-product of the hydrogenation process. 
A)  consumption of too much sugar along with fatty foods produces them 
B)  They are converted by our bodies from unsaturated fats in our diets. 
C)  They are present naturally in animal fats. 
D)  They are a by-product of the hydrogenation process.

Question 13

The benzene molecule can be drawn in two equivalent structures with different positions for the C=C double bonds. This is called _____________.

Accepted Answer

The answer of The benzene molecule can be drawn in...

Question 14

The following molecule is biphenyl, used as a food additive to prevent growth of molds and fungus. Choose the correct chemical formula for biphenyl.

Accepted Answer

A)  C12H10 
B)  C12H12 
C)  C12H20 
D)  C12H18 
E)  C12H19 
A)  C12H10 
B)  C12H12 
C)  C12H20 
D)  C12H18 
E)  C12H19

Question 15

Match each type of fat to its description.
-Polyunsaturated

Accepted Answer

A)  Arises from hydrogenation of vegetable oils and is linked to increased risk of heart disease; usually found in fast foods and processed foods. 
B)  Contains more than one C=C double bond in the hydrocarbon chain 
C)  Contains only C-C single bonds, solid at room temperature. Found in butter, cheese and meat. 
D)  Contains at least one C=C double bond, usually a liquid at room temperature. Found in high quantities in olive oil, avocadoes and peanut oil. 
E)  Has a C=C double bond between carbon atoms #3 and #8, found in fish oil, flaxseed and canola oil. 
A)  Arises from hydrogenation of vegetable oils and is linked to increased risk of heart disease; usually found in fast foods and processed foods. 
B)  Contains more than one C=C double bond in the hydrocarbon chain 
C)  Contains only C-C single bonds, solid at room temperature. Found in butter, cheese and meat. 
D)  Contains at least one C=C double bond, usually a liquid at room temperature. Found in high quantities in olive oil, avocadoes and peanut oil. 
E)  Has a C=C double bond between carbon atoms #3 and #8, found in fish oil, flaxseed and canola oil.

Question 16

The following molecule is toluene, found in paint thinners and used as an industrial solvent. Overexposure to toluene has the ability to cause severe neurological harm. Choose the correct chemical formula for toluene.

Accepted Answer

A)  C7H14 
B)  C6H8 
C)  C6H6 
D)  C7H8 
E)  C7H12 
A)  C7H14 
B)  C6H8 
C)  C6H6 
D)  C7H8 
E)  C7H12

Question 17

The bonding geometry around carbon atoms in a cyclohexane ring is

Accepted Answer

A)  planar. 
B)  tetrahedral. 
C)  octahedral. 
D)  trigonal pyramidal. 
A)  planar. 
B)  tetrahedral. 
C)  octahedral. 
D)  trigonal pyramidal.

Question 18

Hydrocarbon molecules contain

Accepted Answer

A)  carbon, hydrogen, and oxygen. 
B)  water and carbon. 
C)  hydrogen and carbon. 
D)  hydrogen, carbon, nitrogen, oxygen, phosphorus, and sulfur. 
A)  carbon, hydrogen, and oxygen. 
B)  water and carbon. 
C)  hydrogen and carbon. 
D)  hydrogen, carbon, nitrogen, oxygen, phosphorus, and sulfur.

Question 19

Molecules containing a benzene ring are called

Accepted Answer

A)  alkanes. 
B)  aromatic. 
C)  alkynes. 
D)  alkenes. 
E)  aliphatic. 
A)  alkanes. 
B)  aromatic. 
C)  alkynes. 
D)  alkenes. 
E)  aliphatic.

Question 20

The kind of fat that is considered good for the diet, slowing hardening of arteries and reducing the chance of heart attacks and strokes is

Accepted Answer

A)  saturated 
B)  omega-3 
C)  unsaturated 
D)  trans 
E)  lipous 
A)  saturated 
B)  omega-3 
C)  unsaturated 
D)  trans 
E)  lipous

A widely-used method for determining the structure of molecules is called

Describe the molecular structure of a benzene ring.

Electrons in the double bonds of a benzene ring are

Choose the characteristic of saturated fats:

Choose the structure that represents 3-ethyloctane.

A(n) fat contains only single covalent bonds between carbon atoms; a(n) fat contains at least one double bond joining two carbon atoms.

The following molecule is myrcene, found in lemongrass tea. It has an analgesic (pain-relieving) effect, and is likely responsible for the tea's medicinal properties. Choose the correct chemical formula for myrcene.

In the __________ isomer, two hydrocarbon groups are on opposite sides of a C=C double bond.

Identify the number of hydrogen atoms in the following molecule.

Identify the number of hydrogen atoms in the following molecule.

Choose the correct chemical formula in the following molecule.

Where do trans fats come from?

The benzene molecule can be drawn in two equivalent structures with different positions for the C=C double bonds. This is called _____________.

The following molecule is biphenyl, used as a food additive to prevent growth of molds and fungus. Choose the correct chemical formula for biphenyl.

Match each type of fat to its description. -Polyunsaturated

The following molecule is toluene, found in paint thinners and used as an industrial solvent. Overexposure to toluene has the ability to cause severe neurological harm. Choose the correct chemical formula for toluene.

The bonding geometry around carbon atoms in a cyclohexane ring is

Hydrocarbon molecules contain

Molecules containing a benzene ring are called

The kind of fat that is considered good for the diet, slowing hardening of arteries and reducing the chance of heart attacks and strokes is

Antibiotics and Resistance: an Introduction to the Molecules of Life

Elements of Life and Death: The Chemistry of Elements and Atoms

Chemical Bonding

Molecular Diversity

Chemical Reactions

Monomers and Polymers

The Unusual Nature of Water

Molecules and Ions in Solution

Measuring Concentration

Acids and Bases

DNA: The Molecule of Heredity

From DNA to Proteins

Enzymes As Biological Catalysts

Drug Development

Filters

Exam 4: Carbon: The Element of Life

A widely-used method for determining the structure of molecules is called

Describe the molecular structure of a benzene ring.

Electrons in the double bonds of a benzene ring are

Choose the characteristic of saturated fats:

Choose the structure that represents 3-ethyloctane.

A(n) ____________________ fat contains only single covalent bonds between carbon atoms; a(n) ____________________ fat contains at least one double bond joining two carbon atoms.

The following molecule is myrcene, found in lemongrass tea. It has an analgesic (pain-relieving) effect, and is likely responsible for the tea's medicinal properties. Choose the correct chemical formula for myrcene.

In the __________ isomer, two hydrocarbon groups are on opposite sides of a C=C double bond.

Identify the number of hydrogen atoms in the following molecule.

Identify the number of hydrogen atoms in the following molecule.

Choose the correct chemical formula in the following molecule.

Where do trans fats come from?

The benzene molecule can be drawn in two equivalent structures with different positions for the C=C double bonds. This is called _____________.

The following molecule is biphenyl, used as a food additive to prevent growth of molds and fungus. Choose the correct chemical formula for biphenyl.

Match each type of fat to its description. -Polyunsaturated

The following molecule is toluene, found in paint thinners and used as an industrial solvent. Overexposure to toluene has the ability to cause severe neurological harm. Choose the correct chemical formula for toluene.

The bonding geometry around carbon atoms in a cyclohexane ring is

Hydrocarbon molecules contain

Molecules containing a benzene ring are called

The kind of fat that is considered good for the diet, slowing hardening of arteries and reducing the chance of heart attacks and strokes is

Antibiotics and Resistance: an Introduction to the Molecules of Life

Elements of Life and Death: The Chemistry of Elements and Atoms

Chemical Bonding

Molecular Diversity

Chemical Reactions

Monomers and Polymers

The Unusual Nature of Water

Molecules and Ions in Solution

Measuring Concentration

Acids and Bases

DNA: The Molecule of Heredity

From DNA to Proteins

Enzymes As Biological Catalysts

Drug Development

Filters

A(n) fat contains only single covalent bonds between carbon atoms; a(n) fat contains at least one double bond joining two carbon atoms.