BJU Section 20.3

What is a substituted hydrocarbon?

• A hydrocarbon in which one or more hydrogen atoms are replaced by other atoms or groups

• A hydrocarbon that has only hydrogen and carbon atoms

• A hydrocarbon that contains no functional groups

• A mixture of alkanes and alkenes with no reactive sites

Which of the following is an example of a halogenated hydrocarbon?

• CCl4 (carbon tetrachloride)

• C2H6 (ethane)

• C6H6 (benzene)

• CH3CH2OH (ethanol)

What functional group characterizes alcohols in substituted hydrocarbons?

• –OH (hydroxyl group)

• –COOH (carboxyl group)

• –NH2 (amino group)

• –Cl (chlorine atom)

What is the name of the substituted hydrocarbon with the formula CH3CH2NH2?

• Ethylamine

• Ethanol

• Ethanoic acid

• Chloroethane

How does substitution affect the physical or chemical properties of hydrocarbons?

• It introduces new reactivity and changes physical properties like polarity and boiling point

• It makes the hydrocarbon less reactive and more stable

• It has no effect on the compound's polarity or reactivity

• It turns the hydrocarbon into a metal salt

Classify the compound based on the functional group present.

• aldehyde
• ketone
• carboxylic acid
• ester

If an alkane has 10 carbon atoms, how many hydrogen atoms will it have?

• 20

• 22

• 40

• 42

Tags

NGSS.HS-PS1-7