ChemistryChapter 22: Energy
Exam Response (energy)
Typical tasks: fraction table (b.p., size, viscosity); cracking products; complete vs incomplete; named pollutants; nuclear waste vs CO2; re
Learning objectives
- Explain exam response (energy) in simple chemical language.
- Connect 1. oil with 2. other using equations, observations, or trends where needed.
- Answer a short Federal Board question with the correct terms and a clear reason.
Definition
Typical tasks: fraction table (b.p., size, viscosity); cracking products; complete vs incomplete; named pollutants; nuclear waste vs CO2; renewable intermittency; footprint slogan. No refinery design. No weapons. No enrichment. Energy question: name source, one advantage, one disadvantage, one pollutant if fossil. Compare fuels on emissions and renewability, not slogans alone — one advantage and one drawback each.
Important terms
- EXAM RESPONSE (ENERGY)
- Typical tasks: fraction table (b.p., size, viscosity); cracking products; complete vs incomplete; named pollutants; nuclear waste vs CO2; renewable intermittency; footprint slogan.
- 1. OIL
- Mixture.
- 2. OTHER
- Nuclear civilian + waste.
Relationship
- tower = b.p.
- crack = smaller + alkene
Overview
Oil names, then other sources:
Oil
Mixture. Fractions named. Cracking named. Ethene feedstock. Combustion cards from air chapter. Cracking equation: show long alkane -> short + alkene.
Examples Top volatile · Bitumen bottom · Catalytic cracking named
Other
Nuclear civilian + waste. Solar/wind intermittent. H2 as clean at use. Biomass recent carbon. Balanced compare. Renewable vs non-renewable definition with examples.
Examples CO2 · Waste · Reliability · No weapons
WHAT — EXAM RESPONSE (ENERGY)
Typical tasks: fraction table (b.p., size, viscosity); cracking products; complete vs incomplete; named pollutants; nuclear waste vs CO2; renewable intermittency; footprint slogan. No refinery design. No weapons. No enrichment. Energy question: name source, one advantage, one disadvantage, one pollutant if fossil. Compare fuels on emissions and renewability, not slogans alone — one advantage and one drawback each.
WHY — Why this topic matters
EXAM RESPONSE (ENERGY) is an independent FBISE learning unit because students must use its definitions, conditions, equations, or trends separately in explanations and calculations.
HOW — How it works
OIL: Mixture. Fractions named. Cracking named. Ethene feedstock. Combustion cards from air chapter. Cracking equation: show long alkane -> short + alkene. Examples: Top volatile; Bitumen bottom; Catalytic cracking named. OTHER: Nuclear civilian + waste. Solar/wind intermittent. H2 as clean at use. Biomass recent carbon. Balanced compare. Renewable vs non-renewable definition with examples. Examples: CO2; Waste; Reliability; No weapons. Worked 4-mark cracking: large alkanes -> smaller alkanes + alkenes more petrol and ethene (named demand) thermal or catalytic (names) not a reactor design Nuclear: mention waste and safety without weapon or medical dose detail.
Worked example
- Worked 4-mark cracking:
- large alkanes -> smaller alkanes + alkenes
- more petrol and ethene (named demand)
- thermal or catalytic (names)
- not a reactor design
- Nuclear: mention waste and safety without weapon or medical dose detail.
In simple words
Energy exams. No plants, no weapons, no enrichment, no emission how-to.
Key points
- tower = b.p.
- crack = smaller + alkene
- stage names
- axes
Exam preparation
Exam Focus
Quick revision
Revision Zone
Review the key facts, formulas and checks before you move on.Exam Response (energy)
Sticky Notes · Quick Revision
Core Idea
- Typical tasks: fraction table (b.p., size, viscosity); cracking products; complete vs incomplete; named pollutants; nuclear waste vs CO2; renewable intermittency; footprint slogan. No refinery design. No weapons. No enrichment. Energy question: name source, one advantage, one disadvantage, one pollutant if fossil. Compare fuels on emissions and renewability, not slogans alone — one advantage and one drawback each.
1. OIL
- Mixture. Fractions named. Cracking named. Ethene feedstock. Combustion cards from air chapter. Cracking equation: show long alkane -> short + alkene.
- Top volatile
- Bitumen bottom
- Catalytic cracking named
2. OTHER
- Nuclear civilian + waste. Solar/wind intermittent. H2 as clean at use. Biomass recent carbon. Balanced compare. Renewable vs non-renewable definition with examples.
- CO2
- Waste
- Reliability
- No weapons
Exam Example
- Worked 4-mark cracking:
- large alkanes -> smaller alkanes + alkenes
- more petrol and ethene (named demand)
- thermal or catalytic (names)
- not a reactor design
- Nuclear: mention waste and safety without weapon or medical dose detail.
Common Misconceptions
- Do not confuse 1. OIL with 2. OTHER; state the difference before giving an example.
- Writing only “tower = b.p.” is not enough. Explain what it means in a complete sentence.
FBISE Exam Check
- Explain exam response (energy), compare its two main parts, and include the correct chemical evidence.
- Energy exams. No plants, no weapons, no enrichment, no emission how-to.
60-second revision
- Typical tasks: fraction table (b.p., size, viscosity); cracking products; complete vs incomplete; named pollutants; nuclear waste vs CO2; renewable intermittency; footprint slogan.
- 1. OIL: Mixture.
- 2. OTHER: Nuclear civilian + waste.
- Exam reminder: Worked 4-mark cracking: large alkanes -> smaller alkanes + alkenes more petrol and ethene (named demand) thermal or catalytic (names) not a reactor design Nuclear: mention waste and safety without weapon or medical dose detail.
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