The scent of air freshener sprayed in the front of the room can be smelled at the back of the roo...

1. [Group 2] 2nd ans: The air refreshener move rapidly and spread from the bottle to around, so we are able to smell it.

1.1. [Group 2] 3rd ans: The air refreshener gaseous particles move rapidly and spread around us, so we are able to smell it.

2. [Group 3] 2nd ans: Air refreshener exist as gas particles, so they can move rapidly in all directions.

2.1. [Group 3] 3rd ans: Air refreshener exist as gas particles, so they move rapidly in all directions and spread from the teacher's desk to where we are standing, so we can smell it.

3. [Group 2] comments: Do the particles move in a particular direction?

4. [Group 3] comments: You didn't include the key words for movement of gas particles.

5. [Group 1] comments: You must say the air refreshener is in which state?

6. [Group 1] 1st ans: The air refreshener travel to our nose, so we are able to smell it.

6.1. [Group 1] 2nd ans: The air refreshener exist as particles and travel to our nose, so we are able to smell it.

6.1.1. [Group 1] 3rd ans: The air refreshener exist as gas particles, which move rapidly and randomly and travel to our nose, so we are able to smell it.

7. [Group 2] 1st ans: The air refreshener spread from the bottle to around, so we are able to smell it.

8. [Group 3] 1st ans: Air refreshener spreads from the teacher's desk to where we are standing, so we are able to smell it.