Explain how smell molecules move and why they are stronger when hot, and how to reduce the smell.

You're on a roll — a) Explain how the smell molecules are able to move from the latrine up to the classroom. Step 1: Explain the nature of smell molecules. Smell molecules are tiny particles of gaseous substances that are constantly in random motion. Step 2: Describe the process of diffusion. These molecules move from an area of higher concentration (inside the latrine) to an area of lower concentration (the classroom) through the air. This process is known as diffusion. The molecules spread out until they are evenly distributed in the available space. b) Explain why the smell from the latrine becomes much more during the hot day. Step 1: Relate temperature to kinetic energy. On a hot day, the temperature is higher, which means the smell molecules and the air molecules have more kinetic energy. Step 2: Explain the effect on evaporation and diffusion. With increased kinetic energy, the molecules move faster. This leads to a higher rate of evaporation of the smelly substances from the latrine and a faster rate of diffusion of these gaseous molecules through the air. Consequently, more smell molecules reach the classroom in a shorter time, making the smell much more noticeable. c) Share the steps that can be taken to minimize the foul smell. Step 1: Improve ventilation and hygiene. • Ensure proper ventilation in the latrine to allow fresh air to circulate and disperse the smell. • Implement regular and thorough cleaning of the latrine to remove the source of the odor-producing substances. Step 2: Use odor control methods. • Apply disinfectants or deodorizers that can kill odor-causing bacteria or neutralize the smell molecules. • Ensure that the latrine is properly designed with features like water seals (if applicable) or covers for the waste openings to contain the smell. Step 3: Consider structural improvements. • If possible, relocate the latrine further away from the classroom to increase the distance over which smell molecules must diffuse. • Plant odor-absorbing plants or create barriers that can help reduce the spread of the smell. Drop the next question.