Organic Chemistry

Name the polymer formed from this monomer

• chloroethene

• chloroethane

• dichloroethene

• dichloroethane

Answer explanation

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

What functional group is -OH

• Hydroxyl

• Carboxyl

• Amino

• Carbonyl Ketone

Answer explanation

The question asks about the functional group represented by -OH. The correct answer is Hydroxyl. The Hydroxyl functional group is characterized by the presence of an -OH group. It is commonly found in alcohols and phenols. The other options, Carboxyl, Amino, and Carbonyl Ketone, represent different functional groups.

Classify the compound based on the functional group present.

• alkane

• alkene

• alkyne

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.

• alkane

• alkene

• alkyne

• aromatic

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.

Classify the compound based on the functional group present.

• alkane

• alkene

• alkyne

• aromatic

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.

Tags

NGSS.HS-LS1-6

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.

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 Methane, which is the simplest alkane with one carbon atom. Methane is a colorless and odorless gas. It is the main component of natural gas and is commonly used as a fuel. The other options, Ethane, Propane, and Butane, are also alkanes but have more carbon atoms than Methane.

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.

The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.

• single

• double

• triple

• quadruple

Answer explanation

The "ane" ending in "alkane" indicates that the carbons are single-bonded. This means that each carbon atom in the alkane molecule is connected to four other atoms or groups of atoms by single bonds. The other options, such as double, triple, or quadruple, would indicate multiple bonds between the carbon atoms, which is not the case for alkane molecules. Therefore, the correct choice is single-bonded carbons.