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Natiijada casharka
I can use the particle model to predict the state of matter of a substance at different temperatures and discuss the limitations of this model for explaining how particles behave.
Muuji qoraalka
There are changes in arrangement, movement and energy of particles during state changes.
There are two types of change; physical and chemical, and the physical state of a substance can be predicted.
The attraction between particles has a role in determining the amount of energy needed for state changes.
The particle model has limitations, for example by showing particles as same sized, inelastic spheres.
The model does not show the attraction between the particles which affects the amount of energy needed to change state.
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