Question

When a bottle of perfume is sprayed in a corner of a room, we can smell it across the room. Choose the correct option for what happens in this process.

• A. perfume molecules move from high concentration area to low concentration area.
• B. perfume molecules spread through gaps between the air particles
• C. they diffuse.
• D. they are carried by the person who opens the bottle.

Answer 1

Answer: (A), (B), (C)

The correct options are
A perfume molecules move from high concentration area to low concentration area.
B perfume molecules spread through gaps between the air particles
C they diffuse.

When a bottle of perfume is opened in one corner, we can smell it across the room because the molecules of the perfume have a high concentration in the bottle and low concentration outside. So they spread from an area of high concentration to an area of low concentration in the air around through the gaps between the molecules of air in the room. This process is known as diffusion.