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TGC6:
Using these ideas (2): More ‘Think for Yourself’
questions
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‘Is
M above its boiling point?’
No. The ‘snapshot’ shows
the particles close together with no neat pattern. M must
be in the liquid state.
‘Is N above its boiling point?’
Yes. The ‘snapshot’ shows
the particles far apart. This sample is in the gas state.
‘Are the particles of M ‘runny’?’
No. The ‘runniness’ of
the liquid state is caused by the particles being able to
move around, not by what individual particles are like.
‘Are particles of N ‘nothingness’?’
No. The ‘nothingness’
of the gas state is caused by the particles being far apart
and too small to be seen on their own, not by what individual
particles are like.
‘Are the particles of M more energetic than the
particles of N?’
No. Both samples are at the same
temperature. The particles of M are as energetic as the particles
of N.
‘Do particles of N have a stronger ability to
hold onto each other than particles of M?’
No. Particles of N have a weaker
ability to hold onto each other, so they do not stay together
at this temperature. The holding power of the particles of
M is strong enough to keep them together (but not in fixed
places) at this level of energy.
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Science Enhancement Programme CD-ROM 2005 |
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user
guide |
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