4. Introductory Organic Chemistry and Alkanes

What is the difference between hazards and risks in the context of chemistry?

• Hazards are the same as risks.

• Hazards are the actual harm caused, while risks are the potential harm.

• Risks are the likelihood of causing harm, while hazards are anything that could cause harm.

• Hazards are the potential harm, while risks are the actual harm caused.

How can risk be reduced when working with hazardous chemicals?

• By carrying out the experiment on a larger scale.

• By using more hazardous chemicals.

• By planning actions against the hazards associated with each step.

• By increasing the risk of hazards.

What is the general formula of alkanes?

• CnHn+2

• CnH2n

• CnH2n+2

• CnHn

Which type of formula shows the structural arrangement of atoms within a molecule?

• Empirical Formula

• Molecular Formula

• General Formula

• Structural Formula

What is a homologous series in organic chemistry?

• A series of compounds with different boiling points.

• A series of compounds with different structures and formulas.

• A series of compounds with different functional groups.

• A series of compounds with similar structures and formulas.

What is the purpose of a catalytic converter in the context of alkane combustion?

• To remove unburnt hydrocarbons and oxides of nitrogen.

• To produce more carbon monoxide.

• To increase the production of carbon dioxide.

• To reduce the efficiency of combustion.

What is the main product of the combustion of alkanes with sufficient oxygen present?

• Carbon monoxide

• Carbon

• Carbon dioxide

• Water

What type of arrows are used for the chlorination of alkanes?

• Curly half-arrows

• Single-headed arrows

• Curly arrows

• Double-headed arrows

What is the main purpose of cracking longer carbon chains in alkanes?

• To increase the boiling points of the compounds.

• To form aromatic compounds with carbon rings.

• To reduce the reactivity of the compounds.

• To produce smaller, more useful molecules.

What is the general formula for the combustion of alkanes?

• CnH2n

• CnH2n+2

• CnHn

• CnHn+2