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Endothermic Reaction Investigation – Ammonium Chloride + Water

Endothermic Reaction Investigation – Ammonium Chloride + Water. WALT – Explain what an endothermic reaction is and the factors that affect an Endothermic reaction. Exothermic. Endothermic. Chemical reactions where HEAT… Is transferred to the surroundings… Indicated by a RISE in temperature

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Endothermic Reaction Investigation – Ammonium Chloride + Water

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  1. Endothermic Reaction Investigation – Ammonium Chloride + Water WALT – Explain what an endothermic reaction is and the factors that affect an Endothermic reaction

  2. Exothermic Endothermic Chemical reactions where HEAT… Is transferred to the surroundings… Indicated by a RISE in temperature Break bonds which releases heat energy. Chemical reactions where HEAT… Is transferred from the surroundings … Indicated by a FALL in temperature Need to make bonds so take in energy, reducing the temperature.

  3. Ammonium Chloride + Water • What happens when you mix the 2? • Take the temperature before and then after http://www.youtube.com/watch?v=GQkJI-Nq3Os

  4. You have – various amounts of Ammonium Chloride • 0.5g • 1.0g • 1.5g • 2.0g • 2.5g • 3.0g • Measuring cylinder, thermometer and beaker

  5. How can you design an investigation to maximise the reduction in temperature ? • Using the equation • Ammonium Chloride + Water

  6. Add the same amount of water to the Ammonium Chloride.

  7. Answer in full sentences in your books • What was the best combination for the reduction in temperature in the reaction? • If you were to repeat the experiment what would you • Change? • Keep the same?

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