L 5&6 Concentration and rate

L 5&6 Concentration and rate

5 Concentration and rate of reaction

Keywords: Rate of Reaction, concentration , particles, collision, increase

ALL: show using a diagram low and high concentration

MOST: describe the effect of increasing the concentration on rate of reaction

SOME: explain the effect of increasing the concentration on rate of reaction
S: Quick questions

I: What is concentration? With HA class get them to write down what they think and then correct in different coloured pen.

M: Investigation into changing the concentration of a solution on the rate of reaction. Mg & Acid.
With HA set- what is being formed? How could we test for it? Word and symbol equation?

Bar graph drawing- template for LA- HA can draw their own scatter graph with LOBF.
Peer assessment of graphs.

P: Conclusion.
Challenge HA to explain why.

Demonstrate with squash or food dye




Mg strips (similar size) different concentration HCl (1 M, 0.75 M and 0.5 M)
100 mL beakers, 25 mL measuring cylinder and stopwatch.

With HA group could look at different concentrations or even get them to make up their own solutions from 2M (25mL, 20:5 mL etc.)
6 Concentration and rate of reaction

Keywords: Rate of Reaction, concentration , particles, collision, increase

ALL: show using a diagram low and high concentration

MOST: describe the effect of increasing the concentration on rate of reaction
SOME: explain the effect of increasing the concentration on rate of reaction
S: 4 Pics 1 word (from TES)

I: can you answer these questions? (will come back to them at end of lesson)

M:
Iodine Clock- demonstration
- Could get multiple pupils to time so that you have ‘repeated’ and could take and average.

Get pupils to draw a graph
Conclusion

P: Answer the questions from start of lesson.

HW: Particle cartoon concentration.


Iodine clock reaction- solutions premade with different concentrations of thiosulfate.