Study notes
The Particulate Nature of Matter
Kinetic particle theory and diffusion, plus atomic structure: protons, neutrons and electrons, proton and nucleon number, and isotopes.
What this topic covers
- The three states of matter differ in particle arrangement and energy
- Changing state means changing energy, not changing the particles themselves
- Diffusion is particles spreading from high to low concentration
- Molecular mass affects the rate of diffusion
- Temperature affects the rate of diffusion
- An atom is built from protons, neutrons and electrons
- Proton number and nucleon number describe an atom's identity
- Isotopes are atoms of the same element with different numbers of neutrons
- Ions form when an atom gains or loses electrons
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