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Particles
Revision and exam practice for Particles.
8
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10
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10
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72 min
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OcrGcseCombined Science A GatewayParticles
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8 objective pages available
The Particle Model and Changes of State1 objectives
- Communicate the key features of the main features of the particle model in terms of states of matter and change of state.
Physical and Chemical Changes: A Particle Model Perspective1 objectives
- Account for in terms of the particle model the distinction between physical changes and chemical changes.
Limitations of the Particle Model for Explaining Changes of State (Higher)1 objectives
- Account for the limitations of the particle model in relation to changes of state when particles are represented by inelastic spheres (e.g. like bowling balls).
Evolution of the Atomic Model1 objectives
- Communicate the key features of the way and why the atomic model has changed over time.
Understanding the Structure of an Atom1 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 most of the mass in the nucleus.
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 Subatomic Particles: Charges and Masses1 objectives
- Retrieve and apply knowledge of relative charges and approximate relative masses of protons, neutrons and electrons.
Understanding Atomic and Mass Numbers for Subatomic Particles1 objectives
- Work out numbers of protons, neutrons and electrons in atoms and ions, given atomic number and mass number of isotopes.
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