4.3 Particle model of matter

Practice questions on Particle model of matter

• A bicycle tyre is inflated by pumping air into it. The volume of the tyre remains constant… (4 marks, Explain)
• A sealed syringe contains a fixed mass of gas at room temperature. The plunger is slowly p… (4 marks, Explain)
• Describe what happens to the internal energy of a block of ice as it is heated from well b… (4 marks, Describe)
• Explain why evaporation is described as a physical change rather than a chemical change. (4 marks, Explain)
• Explain why freezing is described as a physical change rather than a chemical change. (4 marks, Explain)
• A student cools a sample of liquid wax until it becomes solid. Explain what happens to the… (4 marks, Explain)
• Explain why the temperature of a substance does not change whilst it is melting, even thou… (4 marks, Explain)
• Explain what happens to the internal energy of steam as it condenses into liquid water at … (4 marks, Explain)
• Explain why the pressure inside a sealed gas container increases when the volume of the co… (4 marks, Explain)
• A sealed metal canister contains a fixed mass of gas. The canister is placed in a freezer … (4 marks, Explain)
• A weather balloon is filled with a fixed mass of gas at ground level. As the balloon rises… (4 marks, Explain)
• Describe what happens to the internal energy of a substance as it melts, and explain why i… (4 marks, Describe and Explain)
• Explain why the temperature of water does not increase whilst it is boiling, even though e… (4 marks, Explain)
• Explain why sublimation is described as a physical change rather than a chemical change. (4 marks, Explain)
• Explain what happens to the internal energy of a substance when it is heated and changes s… (4 marks, Explain)