N5 Unit 2 sqa

What is a homologous series?

• A series of compounds with different molecular formulas and different physical properties

• A family of compounds with the same general formula and similar chemical properties

• A group of isomers with the same structural formulae

• A collection of unsaturated hydrocarbons with increasing carbon atoms

Which of the following statements is true about isomers?

• They are compounds with different molecular formulas and identical structural formulae

• They belong to the same homologous series and have identical physical properties

• They are compounds with the same molecular formula but different structural formulae

• They cannot belong to different homologous series

What is the general formula for alkanes?

• CnH2n+2

• CnH2n

• CnHn

• CnH2n-2

What is the general formula for cycloalkanes?

• CnH2n+2

• CnH2n

• CnHn

• CnH2n-2

Which property is common to all alkanes?

• They are soluble in water

• They are commonly used as fuels

• They are unsaturated hydrocarbons

• They can have more than 8 carbons in the longest chain

How can unsaturated compounds be distinguished from saturated compounds?

• Unsaturated compounds can dissolve in water, while saturated compounds cannot

• Unsaturated compounds decolourise bromine solution quickly

• Saturated compounds have at least one carbon-carbon double bond

• Saturated compounds decolourise bromine solution quickly

What is the general formula for alkenes?

• C_nH_2n+2

• C_nH_2n

• C_nH_2n-2

• C_nH_2n+1OH

Which of the following reactions do alkenes undergo?

• Hydrogenation, forming alkanes

• Hydration, forming alcohols

• Both hydrogenation and hydration

• Oxidation, forming carboxylic acids

As the size of alcohols increases, what happens to their solubility in water?

• It increases

• It decreases

• It remains the same

• It first increases then decreases

What functional group do alcohols contain?

• Carboxyl group

• Amino group

• Hydroxyl group

• Aldehyde group