Explaining macroscopic observations (like pressure) using microscopic particle behavior.
If the .rar file you are referring to is a study pack or assessment resource, the following write-up serves as a comprehensive summary of the core concepts generally included in this module. Core Concepts of KS4 SP14 (Particle Model)
Particles are close together but can move past each other in an irregular arrangement. [KS] KS4 SP14.rar
Measuring the density of regular and irregular solids (using displacement cans).
Energy is used to break intermolecular bonds rather than increasing temperature during melting or boiling. The total energy stored by particles in a system. Measuring the density of regular and irregular solids
This is the amount of energy required to change the state of 1kg of a substance with no change in temperature. Melting or freezing.
Faster-moving particles collide with the walls of a container more frequently and with more force, increasing the . This is the amount of energy required to
Particles are far apart and move randomly at high speeds. Changes of State Physical changes (reversible) rather than chemical changes. Mass is conserved during a change of state.