Organic Chem Intro PRACTICE quiz

Name the organic molecule

• chloroethene

• 1, 1, dichloroethane

• 1,2 - dichloroethene

• dichloroethane

Answer explanation

The question asks to name the polymer formed from a specific monomer. The correct answer is dichloroethene.

Classify the compound based on the functional group present.

• alkane

• alkene

• alkyne

• cycloalkane

Answer explanation

The question asks to classify the compound based on the functional group present. The correct choice is 'alkyne'.

Classify the compound based on the functional group present.

• ethane

• ethene

• ethyne

• cycloethene

Answer explanation

The given question asks to classify the compound based on the functional group present. The correct choice is 'alkene'. An alkene is a hydrocarbon compound that contains a carbon-carbon double bond. This functional group distinguishes it from other options like alkanes, alkynes, and aromatics.

Name the compound based on the functional group present.

• butane

• butene

• butyne

• cyclobutane

Answer explanation

The question asks to classify the compound based on the functional group present. The correct choice is 'alkane'. An alkane is a hydrocarbon compound that contains only single bonds between carbon atoms.

How many carbon atoms are in propane

• 1

• 2

• 3

• 4

Answer explanation

Propane is a hydrocarbon with three carbon atoms. It is composed of three carbon atoms and eight hydrogen atoms. The correct answer is 3, as it represents the number of carbon atoms in propane. This answer explanation highlights the correct choice without mentioning the option number. Propane is commonly used as a fuel for heating and cooking due to its high energy content and clean burning properties. It is also used as a propellant in aerosol products.

Tags

NGSS.HS-LS1-6

If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?

• 20

• 22

• 40

• 42

Answer explanation

An alkane with 20 carbon atoms will have 42 hydrogen atoms. This is because the general formula for an alkane is CnH2n+2, where n represents the number of carbon atoms. By substituting n with 20, we get C20H42. Therefore, the correct answer is 42, as it corresponds to the number of hydrogen atoms in the alkane.

Name this alkane

• Methane

• Ethane

• Propane

• Butane

Answer explanation

The question asks to name an alkane. The correct answer is Butane. Butane is an alkane with four carbon atoms. It is a hydrocarbon and is commonly used as a fuel. Methane, Ethane, and Propane are also alkanes, but they have fewer carbon atoms than Butane. Therefore, the correct answer is Butane.

How many valence electons does carbon have

Tags

NGSS.HS-LS1-6

1-pentyne has at least one _______ bond between the carbons

Alkene are ______ compounds (more than one may be correct)

• unsaturated
• double bonded
• saturated

• triple bonds

• single bonds