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## Horizon International School ### 2023-2024/Term 1 ### Chemistry ## Chapter 10 ### SECTION 1 ### Worksheet #### SHORT ANSWER Answer the following questions in the space provided. 1. Identify whether the descriptions below describe an ideal gas or a real gas. - **ideal gas** - The gas will not c...

## Horizon International School ### 2023-2024/Term 1 ### Chemistry ## Chapter 10 ### SECTION 1 ### Worksheet #### SHORT ANSWER Answer the following questions in the space provided. 1. Identify whether the descriptions below describe an ideal gas or a real gas. - **ideal gas** - The gas will not condense because the molecules do not attract each other. - **ideal gas** - Collisions between molecules are perfectly elastic. - **real gas** - Gas particles passing close to one another exert an attraction on each other. 2. The formula for kinetic energy is $KE = \frac{1}{2}mv^2$. - As long as temperature is constant, what happens to the kinetic energy of the colliding particles during an elastic collision? - **Kinetic energy stays the same** - If two gases have the same temperature and share the same energy but have different molecular masses, which molecules will have the greater speed? - **The lighter gas** 3. Use the kinetic-molecular theory to explain each of the following phenomena: - A strong-smelling gas released from a container in the middle of a room is soon detected in all areas of that room. - **Diffusion** - As a gas is heated, its rate of effusion through a small hole increases if all other factors remain constant. - **The speed of gas particles is high, so it has faster effusion**