Grade 11 Physics Pools 3&4 Worksheet: Phases of Matter and Thermal Expansion Part 1: Phases of Matter 1. Question: Describe the difference between solids, liquids, and gases with respect to intermolecular forces, motion of molecules, shape, and volume. 2. Question: Explain why gases are more compressible than solids and liquids. 3. Question: Using the Kinetic Theory, explain why liquids flow but solids do not. 4. Question: Identify one example of diffusion in gases and one in liquids. Part 2: Kinetic Theory and Intermolecular Forces 5. Question: A syringe contains air (gas) and water (liquid). Describe what happens when you apply pressure to the syringe and explain why the behaviors of the gas and liquid differ. 6. Question: Explain how the Kinetic Theory accounts for the differences in behavior between a gas and a liquid in terms of temperature changes. Part 3: Thermal Expansion 7. Question: A metal rod is 1 meter long at 20°C. It is heated to 120°C, causing it to expand by 0.2 cm. o (a) What is the new length of the rod? o (b) Explain why the rod expanded. 8. Question: List two practical examples of thermal expansion and describe how they are related to everyday life. 9. Question: A bimetallic strip consists of two metals with different expansion rates. When heated, the strip bends. Explain why this happens and how this principle is used in everyday applications. Part 4: Expansion and Compression 10. Question: You heat a closed can of soda. Describe what happens to the gas inside the can and explain why this occurs. 11. Question: In the ball and ring experiment, a metal ball just fits through a ring at room temperature. When the ball is heated, it no longer passes through the ring. Explain why this occurs. 12. Question: Why do bridges and railroads have small gaps between sections, and what would happen if these gaps were not present? 13. Question: A liquid-filled thermometer works by the principle of thermal expansion. The liquid inside the thermometer expands as it gets warmer, rising up the tube. If a thermometer filled with a different liquid is used, will the rise in temperature be the same for both liquids? Explain why or why not.