1. Aroma roamer 5 Draw diagrams to show:
7Gd
Aroma roamer
5 Draw diagrams to show:
a) a beaker of water with a spoonful of Bovril in it
b) what the beaker would look like if you left it for 5 minutes without stirring
c) what the beaker would look like if you stirred the Bovril into the water.

2. 7Gd
Aroma roamer
6 Which of these are examples of diffusion? Explain your answer in each case.
a) You can smell the aroma of coffee when you open a new jar of granules.
b) You stir your tea to get the sugar to dissolve.

3. 7Gd
Aroma roamer
6 Which of these are examples of diffusion? Explain your answer in each case.
c) A breeze is blowing and you smell the cooking from a barbecue next door.
d) A baby has a smelly nappy. You can smell it from across the room.

4. 7Gd
Aroma roamer
6 Which of these are examples of diffusion? Explain your answer in each case.
a) You can smell the aroma of coffee when you open a new jar of granules.
diffusion
‘Smelly’ particles are given off by the coffee. These particles then spread through the air. The particles reach your nose and you can smell them.

5. 7Gd
Aroma roamer
6 Which of these are examples of diffusion? Explain your answer in each case.
b) You stir your tea to get the sugar to dissolve.
not diffusion – there is movement of the water or air in bulk
c) A breeze is blowing and you smell the cooking from a barbecue next door.
not diffusion – there is movement of the air in bulk

6. 7Gd
Aroma roamer
6 Which of these are examples of diffusion? Explain your answer in each case.
d) a baby has a smelly nappy. You can smell it from across the room.
diffusion
‘Smelly’ particles are given off by the nappy. These particles then spread through the air. The particles reach your nose and you can smell them.