IB Chemistry HL 1.3.3 Fossil fuels Question Bank

Practise IB Chemistry HL 1.3.3 by applying fossil fuels to exam-style questions.

Exam points

identify the relevant chemical structure, process or evidence
apply the correct chemical model or equation
evaluate the result using chemical reasoning and data

[Maximum number: 2]

Ethanol is a biofuel that can be mixed with gasoline.

Outline the evidence that relates global warming to increasing concentrations of greenhouse gases in the atmosphere.

Any two of:

«showing strong» correlation between «atmospheric» $\ce{CO2}$ concentration/greenhouse gas concentration and average «global/surface/ocean» temperature

lab evidence that greenhouse gases/ $\mathrm{CO}_{2}$ absorb(s) infrared radiation «advanced» computer modelling

ice core data

tree ring data

ocean sediments / coral reefs / sedimentary rocks data

Marking guidance:

Do not accept "global warming" for "average temperature".

Do not accept "traps/reflects heat" OR "thermal energy".

Evidence must be outlined and connected to data.

Accept references to other valid greenhouse gases other than carbon dioxide/ $\mathrm{CO}_{2}$ , such as methane/ $\mathrm{CH}_{4}$ or nitrous oxide/ $\mathrm{N}_{2} \mathrm{O}$ .

2 max

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1.3.3—Fossil fuels question 1