Edexcel International GCSE Chemistry
Edexcel International GCSE Chemistry Energetics Exam Questions
Free Edexcel International GCSE Chemistry exam questions on Energetics, with mark schemes. Covers exothermic and endothermic reactions, calorimetry, energy level diagrams and bond energies.
Energetics exam questions
These packs of real past exam questions cover the whole of Section 3: Physical Chemistry, including Energetics. Work through every question on this sub-topic, then mark your answers against the mark scheme.
StemUp mark scheme flashcards
Edexcel IGCSE Chemistry 4CH1 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
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About Edexcel International GCSE Chemistry Energetics
This sub-topic covers energy changes in reactions.
What you need to know
- Exo and endo Heat released or absorbed.
- Calorimetry Q = mcΔT and ΔH per mole.
- Bond energies Breaking is endothermic, making is exothermic.
Common mistakes in Energetics
- Wrong sign for ΔH.
- Using the mass of solid instead of water.
Try two Energetics exam-style questions
1. Calculate Q when 100 g of water rises 5 °C. (1 mark)
Show the mark scheme answer
2100 J.
2. Explain why combustion is exothermic. (1 mark)
Show the mark scheme answer
More energy is released making bonds than is used breaking them.
Energetics FAQs
What does Energetics cover?
Energy changes, calorimetry and bond energies.
Which practical links here?
Measuring temperature change in reactions.
Revise this topic with flashcards: Edexcel IGCSE Chemistry 4CH1 Flashcards, with mark scheme answers for Anki and Quizlet.
