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8 Cards in this Set
- Front
- Back
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What happens when the particles of a substance lose energy? State what solids, liquids and gases can become.
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The particles may change their state.
e.g. Liquids - Solid - Freezing Gases - Liquid - Condensation |
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What happens when the particles of a substance gain energy? State what solids, liquids and gases become.
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The particles may change their state.
e.g. Solids - Gases - Sublimation Solids - Liquids - Melting Liquids - Gases - Evaporation |
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What happens when a substance reaches melting point?
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The particles in a solid vibrate fast enough to overcome the forces of attraction between them and become free-moving liquid particles.
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What is evaporation?
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Heating a liquid makes its particles move around more quickly. Some particles which have enough energy may overcome attractive forces and escape from the liquid and become a gas.
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What is a boiling point?
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The temperature at which all particles have enough energy to escape is called the bloiling point.
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Name 5 characteristics of a solid.
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Densly packed particles
Particles vibrate around a fixed point Fixed shape Ordered arrangement Not easily Compressed |
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Name 6 characteristics of a liquid.
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Fairly densly packed
Particles flow quickly past each other Less ordered (gaps and faults) Fixed volume Takes shape of container Not easily compressed |
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Name 5 characteristics of a gas.
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Particles far apart
Particles move randomly and quickly spread to fill container take volume of container Easily compressed |
