REVIEW SCB-M4 U8.1 Elemental Carbon and Simple Organic Compounds

Multiple Choice

Which of the following items is NOT primarily composed of compounds that include carbon?

• Foods

• Medicines

• Clothing

• Metals

Open Ended

Why is carbon considered such an important element in living things?

Multiple Choice

Which of the following statements best explains why carbon dioxide is not considered an organic compound?

• It does not contain any carbon atoms.

• It does not contain any hydrogen atoms bonded to carbon.

• It contains only single bonds.

• It is a gas at room temperature.

Open Ended

Describe the structure of graphite and explain how this structure relates to its physical properties.

Multiple Choice

Which of the following compounds is formed when two carbon atoms share six electrons in a triple bond?

• Alkane

• Alkene

• Alkyne

• Aromatic compound

Multiple Choice

What elements make up a hydrocarbon?

• carbon and hydrogen

• hydrogen and oxygen

• oxygen and carbon

• only carbon

Multiple Choice

Which of these is a possible structural formula for a hydrocarbon?

• All of them

Multiple Select

Select all the correct root words for the number of carbon atoms in a hydrocarbon chain:

• meth- for 1 carbon atom

• but- for 4 carbon atoms

• oct- for 6 carbon atoms

• dec- for 10 carbon atoms

Multiple Choice

Name this alkane

• Methane
• Ethane
• Propane
• Butane

Multiple Choice

Name this alkane

• Methane
• Ethane
• Propane
• Butane

Multiple Choice

Name this alkane

• Methane
• Ethane
• Propane
• Butane

Multiple Choice

Which suffix is added to the name of a hydrocarbon molecule that contains only single bonds?

• -ane

• -ene

• -yne

• -ol

Multiple Choice

Compare the structural formulas shown in the second image. Which one represents an alkyne?

• The structure with a triple bond between carbons

• The structure with all single bonds

• The structure with a double bond between carbons

• The structure with a ring structure

Multiple Choice

Prefix for 8 carbons

• non
• oct
• dec
• eth

Multiple Choice

• Alkane
• Alkene
• Alkyne

Multiple Choice

Which formula represents an unsaturated hydrocarbon?

• A
• B
• C
• D

Multiple Choice

Name the hydrocarbon.

• Ethyne

• Pentene

• Propene

• Butane

Multiple Choice

• Propene

• Pentene

• Butane

• Ethene

Multiple Choice

Name the hydrocarbon

• Butyne

• Ethyne

• Butene

• Pentane

Multiple Choice

• Propyne

• Butene

• Pentane

• Butyne

Multiple Choice

Name this alkyne.

• propyne
• butyne
• heptyne
• ethyne

Open Ended

Explain how the structure of methane (CH4) is represented in both the structural formula and the ball-and-stick model.

Multiple Choice

Which of the following statements about alkenes is correct?

• They contain at least one double bond between carbon atoms.

• They contain only single bonds between carbon atoms.

• They contain at least one triple bond between carbon atoms.

• They have a ring structure.

Multiple Select

Select all the correct statements about the hydrocarbon shown in the last image:

• It contains four carbon atoms in its chain.

• Its molecular formula is C4H10.

• It is an alkene.

• It contains a triple bond.

Open Ended

Why do you think carbon is so important in the composition of foods, medicines, clothing, and cosmetics?

Multiple Choice

What percentage of the mass of all living things is composed of compounds that include carbon?

• About 18 percent

• About 50 percent

• About 2 percent

• About 75 percent