Specification Point 3.8:
Practical: Investigate temperature changes accompanying some of the following types of change: Salts dissolving in water, neutralisation reactions, displacement reactions, combustion reactions

Bond energy: The energy required to break a bond

Calorimetry Experiment for Combustion

Calorimetry experiment combustion, CIE IGCSE Chemistry

The calorimetry experiment for combustion

Method:

  • Using a measuring cylinder, put 100 cm3 of water into a copper can
  • Measure and record the initial temperature of the water
  • Fill the spirit burner with test substance and measure and record its mass
  • Place the burner under the copper can and light the wick
  • Stir the water constantly with the thermometer and continue heating until the spirit burner burns out
  • Measure and record the highest temperature of the water

Calculation:

Temperature change of water    =    final temperature – initial temperature

Calorimetry Experiment – Displacement, Dissolving and Neutralisation

Displacement, dissolving and neutralisation, Edexcel IGCSE Chemistry

The calorimetry experiment for displacement, dissolving and neutralisation

Method:

  • Using a measuring cylinder, place 25 cm3 of solution 1 into a polystyrene cup
  • Measure and record the temperature of solution 1
  • Add a measured amount of reactant (solid for dissolving, solution 2 for displacement and neutralisation) into the polystyrene cup and stir the mixture
  • Measure and record the highest temperature reached by the mixture

Calculation:

Temperature change    =    final temperature – initial temperature

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Author: Jamie

Jamie got a First class degree in Chemistry from Oxford University before going on to teach chemistry full time as a professional tutor. He’s put together these handy revision notes to match the Edexcel IGCSE Chemistry specification so you can learn exactly what you need to know for your exams.