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The random molecular motion of a substance is greatest when the substance is
A condensed.
B a liquid.
C frozen.
D a gas

Sagot :

indrawboy

The random molecular motion of a substance is greatest when the substance is a gas

Further explanation

The matter is something that occupies space and has mass.

Material forms can be divided into gas, liquid and solid

Among these forms changes can occur

for example:

  • solid to gas: sublime
  • gas to solid: crystallized
  • liquid to gas: evaporate
  • gas to liquid: condenses
  • solid to liquid: melting
  • liquid to solid: freeze

These three forms we can distinguish for example:

Solids are generally incompressible and have a fixed shape and volume. The liquid is relatively incompressible and has a fixed volume, but its shape can change. Gas is relatively compressible, but its shape and volume follow its place

Solids have particles that are arranged close together and converge so that their motion is limited because the forces of attraction between the particles are larger so that the particles vibrate but are tightly bound in place.

Liquid substances have constituent particles rather far from each other. so the particles are somewhat free to move because the bonds between the particles are weak.

Gas has constituent particles which are located very far apart so that the arrangement is irregular and the movement is free

because the tensile force between particles is weak.

  • A. condensed

is a change in form from gas (vapor) to liquid. So the shape becomes liquid, so the molecular motion is not free

  • B a liquid.

molecular motion in substances that are liquid can be free to move but limited

  • C frozen.

frozen condition is a state of liquid that turns into solid, ice. So the shape is in the form of a solid that has molecular motion that is not free to move

  • D a gas

The molecular motion in the gaseous form has free motion because of its distance apart

So from this comes the Kinetic Molecular Theory (KMT) which states that a gas consists of molecules that move at a constant and random speed

Learn more

the average kinetic energy of gas particles

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when gas particles collide

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