Презентация на тему Diffusion

Содержание

2. DiffusionAll gaseous and particles in solution have
3. Concentration GradientHigher rate of diffusionLower rate of
4. ExamplesGaseous Exchange in the lungsGaseous exchange between leaves and the atmosphereAbsorption of the products of digestion
5. Investigating Diffusion Method 1ammoniaRed litmus
6. This should outline the purpose of your
7. Write A TitleState the aimInclude a hypothesis
8. Write The MethodGive a series of instructions.State how you control the variables.Include safety precautions
9. Present Your Results In A Neat TableDraw
10. Draw a graphUse graph paper.Use a pencil and ruler.Label the axes, including the units
11. Write A DiscussionWrite a conclusion. Relate it
13. Results
14. Graph showing the length of red litmus
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DiffusionAll gaseous and particles in solution have kinetic energy (they move).This means that they move from an area of high concentration to low concentration.This continues until they are evenly spread out.The greater the concentration gradient, the

Concentration GradientHigher rate of diffusionLower rate of diffusionA ball rolls faster down

ExamplesGaseous Exchange in the lungsGaseous exchange between leaves and the atmosphereAbsorption of the products of digestion

Investigating Diffusion Method 1ammoniaRed litmus

This should outline the purpose of your experiment. What are you trying

Write A TitleState the aimInclude a hypothesis

Write The MethodGive a series of instructions.State how you control the variables.Include safety precautions

Present Your Results In A Neat TableDraw all the borders to the

Draw a graphUse graph paper.Use a pencil and ruler.Label the axes, including the units

Write A DiscussionWrite a conclusion. Relate it to the hypothesis.Comment on the

Graph showing the length of red litmus that has turned blue (distance

Investigating Diffusion Method 2 Place a crystal of potassium permanganate in the

Слайды презентации

Слайд 2 Diffusion
All gaseous and particles in solution have kinetic

DiffusionAll gaseous and particles in solution have kinetic energy (they move).This

energy (they move).
This means that they move from an

area of high concentration to low concentration.
This continues until they are evenly spread out.
The greater the concentration gradient, the greater the rate of diffusion (we ventilate our lungs to maintain a high concentration gradient.
Things diffuse faster in air than in solution.
Raising the temperature increases the rate of diffusion.

Слайд 3 Concentration Gradient
Higher rate of diffusion
Lower rate of diffusion
A

Concentration GradientHigher rate of diffusionLower rate of diffusionA ball rolls faster

ball rolls faster down a steeper slope. Similarly, particles

diffuse faster down a high concentration gradient.

Слайд 4 Examples
Gaseous Exchange in the lungs
Gaseous exchange between leaves

and the atmosphere
Absorption of the products of digestion

Слайд 5 Investigating Diffusion Method 1
ammonia
Red litmus

Слайд 6 This should outline the purpose of your experiment.

This should outline the purpose of your experiment. What are you

What are you trying to find out?
Write A Title

Слайд 7 Write A Title
State the aim
Include a hypothesis

Слайд 8 Write The Method
Give a series of instructions.
State how

you control the variables.
Include safety precautions

Слайд 9 Present Your Results In A Neat Table
Draw all

Present Your Results In A Neat TableDraw all the borders to

the borders to the columns.
Enter headings to the columns

with the units.
Be consistent with the number of decimal places.

Слайд 10 Draw a graph
Use graph paper.
Use a pencil and

ruler.
Label the axes, including the units

Слайд 11 Write A Discussion
Write a conclusion. Relate it to

Write A DiscussionWrite a conclusion. Relate it to the hypothesis.Comment on

the hypothesis.
Comment on the reliability of the results.
Suggest possible

improvements

Слайд 12

Слайд 13 Results

Слайд 14 Graph showing the length of red litmus that

Graph showing the length of red litmus that has turned blue

has turned blue (distance that the ammonia has diffused)

against time

The gradient of the curve indicates the rate of diffusion. At the start, the concentration gradient was high and the rate of diffusion was high. As the ammonia spread out, the concentration gradient decreased resulting in a lower rate of diffusion.