Particle Model of Matter | AQA GCSE Combined Science Trilogy Physics, Foundation tier (8464)
Particle Model of Matter
- 104 questions
- 5 subtopics
- Physics Paper 1
- Physics Paper 1
Particle Model of Matter is examined in Physics Paper 1.
It covers density of materials, changes of state and internal energy, temperature changes in a system and specific heat capacity, changes of state and specific latent heat and particle motion in gases.
Sample questions from Particle Model of Matter
Answer each one closed book first, then open the answer.
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Density of materials
A liquid has a density of 1200 kg/m³. Calculate the mass of 0.050 m³ of the liquid.
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Mass = 1200 × 0.050 = 60 kg. -
Density of materials
Describe how the density of a liquid is determined in the laboratory.
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An empty measuring cylinder is weighed, a measured volume of liquid is added and it is weighed again, then the mass of the liquid is divided by its volume. -
Changes of state and internal energy
What happens to the total mass of a substance when it changes state?
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The mass is conserved, so it stays the same. -
Changes of state and internal energy
Define the internal energy of a system.
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It is the total kinetic energy and potential energy of all the particles that make up the system. -
Temperature changes in a system and specific heat capacity
Write the symbol equation linking change in thermal energy, mass, specific heat capacity and temperature change.
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ΔE = mcΔθ. -
Temperature changes in a system and specific heat capacity
Suggest why water is chosen as the coolant that carries energy away from a car engine.
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Water has a high specific heat capacity, so it can absorb a great deal of energy for only a small rise in temperature. -
Changes of state and specific latent heat
In what unit is the energy for a change of state measured?
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In joules, J. -
Changes of state and specific latent heat
State the difference between specific heat capacity and specific latent heat.
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Specific heat capacity is the energy per kilogram to change the temperature by one degree Celsius, while specific latent heat is the energy per kilogram to change state with no temperature change.
The 5 subtopics
One subtopic is one session. Work down the list.
| Subtopic | What it covers | Questions |
|---|---|---|
| Density of materials | Density and the equation linking density, mass and volume with its rearrangements, units and calculations, the particle model of solids, liquids and gases and why a gas is less dense, and practical methods for finding the volume and density of regular and irregular solids and of liquids. | 26 |
| Changes of state and internal energy | Melting, freezing, boiling, evaporation, condensation and sublimation, conservation of mass in a change of state, why changes of state are physical and reversible, internal energy as the total kinetic and potential energy of the particles and why it is not temperature, and the two possible outcomes when a system is heated. | 18 |
| Temperature changes in a system and specific heat capacity | The factors deciding how much a substance warms when heated, the equation linking change in thermal energy, mass, specific heat capacity and temperature change with its symbols and units, what specific heat capacity means and why water makes a good coolant, and calculations of energy, temperature rise, specific heat capacity and mass. | 20 |
| Changes of state and specific latent heat | Energy taken in during a change of state with no change in temperature, latent heat and specific latent heat, the equation E = mL with its units and calculations, specific latent heat of fusion and of vaporisation, reading a melting point from a heating graph, and how specific heat capacity and specific latent heat differ. | 25 |
| Particle motion in gases | The random motion of gas molecules, how temperature relates to their average kinetic energy, and how collisions with the container walls produce pressure that rises and falls with temperature at constant volume. | 15 |
How the guide is worked
Answering a question from memory stores it far better than reading the answer again. The guide runs that as a fixed procedure on one subtopic at a time, about twenty minutes a session.
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Step 1 · Closed book
Cover the answers. Work through one subtopic and write down what you can. Leave blanks where you have nothing.
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Step 2 · Open book
Go back to the top. Read each printed answer and write it out in full, including the ones you had right.
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Step 3 · Closed book again
Same questions, same order, from memory. The gap between pass one and pass three is the session result.
Read the full method, the return schedule and the research behind it.
Nearby topics
AQA GCSE Combined Science Trilogy Physics, Foundation tier Active Recall Guide
Every topic, not just this one. 994 questions with their answers.