Gases

Question 7 • FL-2003350-Chemistry 1 Honors Sem 1 - Flex

Identify the examples of diffusion in the list below. Check all that apply.

Answer

A teacher takes the cap off a permanent marker. A few minutes later, students at the back of the classroom complain about the odor of the marker.

A cooking school student burns a piece of toast. Soon, the entire kitchen smells like burnt toast.

An inflated balloon shrinks when it is placed in a cold freezer.

Toxic fumes produced by a chemical factory are detected in the air in a town several miles away.

Heating a flexible container filled with gas causes it to expand.

Explanation

Diffusion is the spreading of particles from an area of higher concentration to areas of lower concentration. Marker odor and burnt-toast smell spread through the air, so A and B are examples. Toxic fumes spreading through the air to a distant town are also an example (D). The balloon shrinking in cold air and a container expanding when heated result from temperature-related changes in gas volume, not diffusion.

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