Download Presentation - The PPT/PDF document "Endothermic Reaction Investigation –" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Presentation on theme: "Endothermic Reaction Investigation –"— Presentation transcript:
Slide1
Endothermic Reaction Investigation – Ammonium Chloride + Water
WALT – Explain what an endothermic reaction is and the factors that affect an Endothermic reaction
Slide2
Exothermic
Endothermic
Chemical reactions where HEAT…
Is transferred to the surroundings…
Indicated by a RISE in temperatureBreak bonds which releases heat energy.
Chemical reactions where HEAT…Is transferred from the surroundings …Indicated by a FALL in temperatureNeed to make bonds so take in energy, reducing the temperature.
Slide3
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
Slide4
You have – various amounts of Ammonium Chloride
0.5g
1.0g
1.5g
2.0g
2.5g
3.0g
Measuring cylinder, thermometer and beaker
Slide5
How can you design an investigation to maximise the reduction in temperature ?
Using the equation
Ammonium Chloride + Water
Slide6
Amount Ammonium Chloride (
gm)Vol Water (ml)Keep it ConstantTemp before (C)Temp After (C)Temp Difference (C)0.520ml1.01.52.02.53.0
Add the same amount of water to the
Ammonium
Chloride.
Slide7
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
