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
The calorimetry experiment for combustion
- 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
Temperature change of water = final temperature – initial temperature
Calorimetry Experiment – Displacement, Dissolving and Neutralisation
The calorimetry experiment for displacement, dissolving and neutralisation
- 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
Temperature change = final temperature – initial temperature
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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.
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