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Northern IrelandChemistryQuick questions

AS 1 Basic Concepts in Physical and Inorganic Chemistry

Quick questions on Energetics: enthalpy changes, calorimetry and Hess's law - CCEA A-Level Chemistry

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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State whether an endothermic reaction has a positive or negative ΔH\Delta H. [1 mark]
What is q2?
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Burning a fuel raises the temperature of 100 g100\ \text{g} of water by 20 K20\ \text{K}. Calculate the heat released. [2 marks]

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