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6.2 ; states of matter
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- 1Give information on: a) solids b) liquids c) gasesa) no flow, fixed shape and volume, and density higher than a gas
b) flows, fits the container's shape, fixed volume, density higher than a gas
c) flows, fills container, volume can be changed, density lower than solid/liquid - 2define a physical changea reversible change when a substance changes what it looks like but its chemical properties stay the same
- 3What is conservation of mass?when a substance changes state, the number of particles in the substance stays unchanged- the mass is conserved
- 4TRUE or FALSE: A gas has strong intermolecular forcesFALSE
a solid has strong intermolecular forces whereas a gas has much weaker ones - 5Explain the process of changing states.gas → (condesation) → solid/liquid
solid → (melting) → liquid
liquid → (boiling) → gas
liquid → (freezing) → solid
solid → (sublimation) → gas - 6Define the kinetic theory of matterthe particles of a substance in its solid, liquid and gas states have different amounts of energy
- 7Explain the kinetic energy and movement of particles in: a) solid b) liquid c) gasa) low, vibrate in fixed positions, cannot be squashed/compressed- close together so no space to move into
b) medium, move about at random, cannot be compressed, free to move around each other
c) high, move quickly in all direction, further apart from each other so able to compress
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- El usuario ha eliminado su información de asignaturas Fichas sobre 6.2 ; states of matter, creado por Usuario eliminado el 12/03/2018.
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- Creado por Farha Idrees · 26 nov 2017
- Copiado por Farha Idrees · 12 mar 2018
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