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Mixing & Separating Experiments - Diffusion

 
See and Smell Diffusion
Materials you will need:

• Tea Bag
• Clear mug
• Water
• Air Freshener Spray
• Maple syrup
• Clear glass

 

diffusion
 
Steps (3 different experiments below)

Exp. 1
1.  Place a tea bag in the clear mug.
2.  Fill the mug with water and leave for a few hours.

Exp. 2
1.  Have a friend stand at the back of a room.
2.  Spray the air freshener at the front of a room. 
3.  Time how long it takes for the smell to reach the back of the room.

Exp.3
1.  Pour some water in a clear glass.
2.  Carefully pour some syrup in the glass and leave for several hours.

Step 3 for Exp. 1 & 3
3.  Go back after several hours and check on your mug with the tea bag and glass with syrup.

The random movements of the liquid particles mix the syrup and the tea bag with the water.

This is called diffusion. 

Diffusion only happens in liquids and gases.

The random movements of the gas particles spread the smell from the air freshener as it diffuses across the room to reach the back of the room.

 
 
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