Use particle theory to explain why solids and liquids cannot be compressed
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Matter exists in four different forms - solid, liquid, gas, and plasma. These are the four states of matter. You can recognize each state because they have different properties. A property of a material describes how it behaves. This behavior is not observable at the chemical level due to microscopic sized particles. We can observe how many H2O particles behave when we open a faucet, releasing water, which is a lot of H2O particles in their liquid state. Of course we can observe other states of H2O particle groupings, at low temperatures they freeze, demonstrating a solid property. At high temperatures they form a gas called steam. Behavior is how something responds when placed in a container, when it is squeezed, or released.
{ class="wikitable" !Property !Solids !Liquids !Gases
!Volume |have a definite volume |have a definite volume |have no definite volume - they always fill the container they're in
!Shape |have a definite shape |match the shape of the container |become the same shape as the container
!Density |have a high density |have a medium density |have a low density
!Compressibility |not easily squashed |not easily squashed |easily squashed
!Flow |don't flow |flow easily |flow easily
Particle theoryEdit
All materials are made up of particles.The particles that are in a substance (material) stay the same whatever state the substance is in. The only thing what changes is the arrangement of the particles and the energy they have.Whichever state the substance is in depends on how strongly the particles stick together. And how well the particles stick together depends on:the materialthe temperaturethe pressure.This is particle theory, and it explains all the different properties of solids, liquids and gases.
SolidsEdit
PARTICLES ARE HELD VERY CLOSE TOGETHERThey are held tightly together by strong forces of attraction.They are held in fixed positions but they do vibrate.Because the particles don't move, solids have a definite shape and volume, and can't flow.Because the particles are already packed closely together, solids can't easily be compressed.Because there are lots of particles in a small volume, solids are dense.
the solids
LiquidsEdit
PARTICLES ARE CLOSE TOGETHER BUT CAN MOVEParticles are still held very close together by strong forces of attraction.But they are free to move past each other.Because the particles can move, liquids don't have a definite shape, and they can flow.Because the particles are still packed close together, liquids can't easily be compressed and keep the same volume.Because there are still quite a lot of particles in a small volume, liquids are quite dense.
{ class="wikitable" !Property !Solids !Liquids !Gases
!Volume |have a definite volume |have a definite volume |have no definite volume - they always fill the container they're in
!Shape |have a definite shape |match the shape of the container |become the same shape as the container
!Density |have a high density |have a medium density |have a low density
!Compressibility |not easily squashed |not easily squashed |easily squashed
!Flow |don't flow |flow easily |flow easily
Particle theoryEdit
All materials are made up of particles.The particles that are in a substance (material) stay the same whatever state the substance is in. The only thing what changes is the arrangement of the particles and the energy they have.Whichever state the substance is in depends on how strongly the particles stick together. And how well the particles stick together depends on:the materialthe temperaturethe pressure.This is particle theory, and it explains all the different properties of solids, liquids and gases.
SolidsEdit
PARTICLES ARE HELD VERY CLOSE TOGETHERThey are held tightly together by strong forces of attraction.They are held in fixed positions but they do vibrate.Because the particles don't move, solids have a definite shape and volume, and can't flow.Because the particles are already packed closely together, solids can't easily be compressed.Because there are lots of particles in a small volume, solids are dense.
the solids
LiquidsEdit
PARTICLES ARE CLOSE TOGETHER BUT CAN MOVEParticles are still held very close together by strong forces of attraction.But they are free to move past each other.Because the particles can move, liquids don't have a definite shape, and they can flow.Because the particles are still packed close together, liquids can't easily be compressed and keep the same volume.Because there are still quite a lot of particles in a small volume, liquids are quite dense.
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