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Diffusion and osmosis - Coggle Diagram
Diffusion and osmosis
Lesson 1
Introduction to diffusion and osmosis
Selective permeability of membranes
example : strainers
Diffusion
Definition
Examples
List examples
Demonstrate examples:
Perfume
Water and food colouring ?
Skittles
Osmosis
definiton
Examples
Plant (potato or celery etc.) one piece placed in water the other placed in salt water: observe the difference.
Gummy bears. One placed in water, the other placed in salt water.
Walking particle activity: Students act as particles in the room and mimic how particles would move (diffuse)through the rom.
learning outcomes:
2.2.6 Movement through Cell Membranes
Selective permeability of membranes surrounding the cells and within the cells.
Definition of the terms "diffusion" and "osmosis". Examples of each.
Lesson 2
Osmosis and diffusion continued:
within animal and plant cells
Osmosis and animal cells
Using examples from previous class (gummy bears)
Osmosis and plant cells
Using examples form previous class (potato)
Osmosis and plant preservation
learning outcomes:
2.2.6 Movement through Cell Membranes
Definition of "turgor". Simple explanation of turgidity in plant cells.
Describe the application of high salt or sugar concentration in food preservation.
Lesson 3
Visking tube experiment to demonstrate osmosis
learning outcomes:
2.2.6 Movement through Cell Membranes
Selective permeability of membranes surrounding the cells and within the cells.
Definition of the terms "diffusion" and "osmosis". Examples of each.