1. What is the primary role of changes of state in the behavior of particles?
2. What is the primary difference in particle arrangement between solids and gases?
3. What is the name of the model that describes particles as small spheres whose energy and movement determine the states of matter and phase changes?
States of Matter — properties?
Solids: fixed shape, particles vibrate; liquids: shape of container, particles move; gases: spread out, particles move freely.
States of Matter — properties?
Solid: fixed shape; Liquid: shape of container; Gas: no fixed shape or volume.
Particle structures — role?
Determine properties and behavior during phase changes.
Particle arrangement — solids vs gases?
Solids: fixed, regular; Gases: spread out, random.
Changes of State — mechanism?
Energy transfer overcomes or forms intermolecular forces.
Melting point — definition?
Temperature where solid becomes liquid.
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