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Chapter 13: Organic Chemistry + Chapter 14: Hydrocarbons

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1. Chloe is learning about structural formulas. She knows that structural formulas show the arrangement of atoms in a molecule. What does a structural formula of methane look like?

A CH4

B H-C-H with H's around carbon

C C2H6

D C3H8

2. Hydrocarbons are important because they are:

A Only laboratory chemicals

B Main source of fuels and raw materials

C Non-combustible

D Only pollutants

3. Which source provides natural organic compounds?

A Minerals

B Living organisms

C Metals

D Salts

4. Oliver is learning about the preparation of alkanes by the cracking of larger hydrocarbons. He knows that cracking produces smaller alkanes and alkenes. What is the purpose of cracking?

A To produce more valuable products like gasoline

B To increase the molecular weight of hydrocarbons

C To convert alkanes to alkenes

D To remove impurities

5. Complete combustion of hydrocarbons produces:

A CO and water

B CO2 and water

C Carbon and water

D Hydrogen only

6. George is learning about alkynes. He understands that alkynes are used in welding. Which alkyne is commonly used in oxyacetylene welding?

A Methane

B Ethyne

C Propane

D Butene

7. Which pair represents structural isomers?

A Ethane and propane

B Butane and isobutane

C Ethene and ethyne

D Methane and ethane

8. Which is the simplest alkyne?

A Methyne

B Ethyne

C Propyne

D Butyne

9. Structural formula shows:

A Only molecular mass

B Only number of atoms

C Arrangement of atoms

D Physical state

10. Bromine water test is used to detect:

A Saturated hydrocarbons

B Unsaturated hydrocarbons

C Alcohols

D Acids

Chapter 13: Organic Chemistry + Chapter 14: Hydrocarbons

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