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6.2 ; states of matter

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Zusammenfassung der Ressource

Frage Antworten
Give information on: a) solids b) liquids c) gases a) 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
define a physical change a reversible change when a substance changes what it looks like but its chemical properties stay the same
What is conservation of mass? when a substance changes state, the number of particles in the substance stays unchanged- the mass is conserved
TRUE or FALSE: A gas has strong intermolecular forces FALSE a solid has strong intermolecular forces whereas a gas has much weaker ones
Explain the process of changing states. gas → (condesation) → solid/liquid solid → (melting) → liquid liquid → (boiling) → gas liquid → (freezing) → solid solid → (sublimation) → gas
Define the kinetic theory of matter the particles of a substance in its solid, liquid and gas states have different amounts of energy
Explain the kinetic energy and movement of particles in: a) solid b) liquid c) gas a) 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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