Presentation is loading. Please wait.

Presentation is loading. Please wait.

Planning an experiment

Similar presentations


Presentation on theme: "Planning an experiment"— Presentation transcript:

1 Planning an experiment
Investigating the factors that affect temperature changes in reacting solutions Planning an experiment

2 Objectives To plan an experiment to investigate a factor that affects the temperature rise in an exothermic reaction Carry out an experiment to investigate the temperature rise in a displacement reaction

3 Examples to be investigated:
Acid and metals Acid and carbonates Neutralisation Displacement reactions

4 Before you plan an experiment, you need to think of the factors
that might affect the temperature change in each case If you choose to investigate one variable, the others must be kept the same in order for the experiment to be a fair test (control variables)

5 Variables that affect the temperature rise
Reaction Variables that affect the temperature rise Metals and acids Metals and carbonates Acids and alkalis Displacement reactions Type of metal Type of acid Concentration of acid Size of pieces of metal

6 Write a hypothesis for one of the experiments
A simple setup like this one could be used for these experiments Explain why the results of this experiment may not be accurate and what might be done to improve them Not all the heat energy from the reaction raises the temperature –add lid, stir, place in beaker and surround with cotton wool etc to increase the insulation

7 Class practical-the temperature rise of copper chloride solution
depends on the reactivity of the metal added to the solution


Download ppt "Planning an experiment"

Similar presentations


Ads by Google