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Matter
Revision and exam practice for Matter.
14
Objectives
10
Flashcards
10
Questions
90 min
Study time
OcrGcseCombined Science A GatewayMatter
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14 objective pages available
Evolution of the Atomic Model1 objectives
- Communicate the key features of the way and why the atomic model has changed over time.
Understanding the Atomic Model: Nucleus and Electrons1 objectives
- Communicate the key features of the atom as a positively charged nucleus surrounded by negatively charged electrons, with the nuclear radius much smaller than that of the atom and with almost all of the mass in the nucleus.
Understanding the Size of Atoms and Small Molecules1 objectives
- Retrieve and apply knowledge of the typical size (order of magnitude) of atoms and small molecules.
Understanding Density1 objectives
- Develop knowledge and skill in density.
Density and States of Matter1 objectives
- Account for the differences in density between the different states of matter in terms of the arrangements of the atoms and molecules.
Understanding the Relationship between Density, Mass, and Volume1 objectives
- Use knowledge of the relationship between density, mass and volume to changes where mass is conserved.
Conservation of Mass During Changes of State1 objectives
- Communicate the key features of the way mass is conserved when substances melt, freeze, evaporate, condense or sublimate.
Physical and Chemical Changes: Understanding the Difference1 objectives
- Communicate the key features of physical changes differ from chemical changes because the material recovers its original properties if the change is reversed.
Heating Systems and Energy Changes1 objectives
- Communicate the key features of the way heating a system will change the energy stored within the system and raise its temperature or produce changes of state.
Specific Heat Capacity vs. Specific Latent Heat1 objectives
- Develop knowledge and skill in the term specific heat capacity and distinguish between it and the term specific latent heat.
Calculating Energy Changes using Specific Heat Capacity1 objectives
- Use knowledge of the relationship between change in internal energy of a material and its mass, specific heat capacity and temperature change to calculate the energy change involved.
Energy Changes in State Transitions1 objectives
- Use knowledge of the relationship between specific latent heat and mass to calculate the energy change involved in a change of state.
Molecular Motion in Gases, Temperature, and Pressure1 objectives
- Account for the way the motion of the molecules in a gas is related both to its temperature and its pressure.
Temperature, Pressure and Gas Behaviour at Constant Volume1 objectives
- Account for the relationship between the temperature of a gas and its pressure at constant volume (qualitative only).
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Practice preview
- If you have a chain of 10 atoms, each with a diameter of 0.1 nm, what would be the total length of the chain?
- A fixed mass of gas is in a container with a movable piston. The piston is pushed in, reducing the volume of the container while the temperature of the gas is kept constant. Describe how the motion of the gas molecules accounts for the increase in pressure. [3 marks]
- A 1.5 kg iron pan needs 67500 J of energy to increase its temperature by 100 °C. Explain what is meant by specific heat capacity, and calculate the specific heat capacity of iron using the given data. Unofficial practice material [5 marks]
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