The document describes the kinetic theory of matter and the arrangement and movement of particles in the three states of matter - solid, liquid, and gas. In solids, particles are packed closely together in an orderly arrangement with strong forces between them, allowing only vibration and rotation. In liquids, particles are closely packed but in a random arrangement, with weaker forces allowing vibration, rotation, and movement throughout collisions. Gases have particles very far apart in random motion with weak forces, allowing free vibration, rotation, and movement with a high rate of collision.
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The kinetic theory of matter
1. The kinetic theory of matter
Arrangement of
State of Matter Arrangement and Movement of Particles
Matter
SOLID The particles are packed closely
Has a fixed together in an orderly manner.
volume and There are strong forces between
shape the particles.
Cannot be The particles can only vibrate and
compressed rotate about their fixed positions.
LIQUID
Has fixed The particles are packed closely
volume but
together but not in orderly
does not have
arrangement.
fixed shape
Held together by strong forces but
(takes the
weaker than the forces in a solid.
shape of
The particles can vibrate, rotate
container)
and move throughout the liquid.
Cannot be
They collide against each other.
compressed
easily
The particles are very far apart
GAS
from each other and in a random
Does not have
motion.
a fixed shape or
Weak forces between the particles.
volume
The particles can vibrate, rotate
Can be
and move freely. The rate of
compressed
collision is greater than the rate of
easily
collision in a liquid.