The Behavior of Matter - Diffusion
When gas particles, like the perfumes in a can of deodorant, are released into a room they are free to move in any direction. Eventually, they will spread throughout the entire room. The scientist called this diffusion.
Aim:
To observe diffusion in a liquid.
Hypothesis:
The crystal will dissolve and the colour of the crystal will spread in the water.
Equipment:
Petri dish, tweezers, a crystal of potassium permanganate.
Method:
1. Half fill your petri dish with cold tap water.
2. Place the petri dish on your workbench and allow the water to become settled.
3. Using the tweezers, place a single crystal of potassium permanganate in the centre of the petri dish.
4. Observe for 5 minutes.
5. Repeat the experiment using hot water.
Observation:
In cold water - It takes a while to spread around with cold water.
In hot water - It's quickly spread around. t has little bubbles in the middle of the crystal.
Explanation:
The potassium permanganate crystal spread quickly because the warm water can make the particle move faster than the cold water.
Aim:
To observe diffusion in a liquid.
Hypothesis:
The crystal will dissolve and the colour of the crystal will spread in the water.
Equipment:
Petri dish, tweezers, a crystal of potassium permanganate.
Method:
1. Half fill your petri dish with cold tap water.
2. Place the petri dish on your workbench and allow the water to become settled.
3. Using the tweezers, place a single crystal of potassium permanganate in the centre of the petri dish.
4. Observe for 5 minutes.
5. Repeat the experiment using hot water.
Observation:
In cold water - It takes a while to spread around with cold water.
In hot water - It's quickly spread around. t has little bubbles in the middle of the crystal.
Explanation:
The potassium permanganate crystal spread quickly because the warm water can make the particle move faster than the cold water.
Jhermaine
ReplyDeleteA good clear description of what you did. The difference in diffusion with temperature is really important. How could you use this in everyday life at home?