solids, liquids and gases- a particle model  click here to help visualize

Visualize our model of solids, liquids and gases.  Think about Particle Spacing and Freedom of Movement.  Picture these before you scroll down to find our description of the particles and the evidence we used to suppport these inferences.  click here for graphic organizer blank and the key

solids  --  spacing?    -- freedom of movement?

liquids -- spacing? -- freedom of movement?

gases -- spacing? -- freedom of movement?

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SOLIDS - The particles are as close as they can get and vibrate in fixed positions

EVIDENCE - The solid cannot be compressed, so the particles must already be as close as they can get.  The solid maintains its shape so the particles must stay in thier positions.

LIQUIDS - The particles are as close as they can get and free to move within the liquid.

EVIDENCE - The liquid cannot be compressed, so the particles must already be as close as they can get and cannot be pushed any closer. The liquid takes the shape of the container, so the particles must be able to move to new locations wihtin the liquid to assume the new shape.

GASES - The particles are widely spaced and free to move anytwhere wihtin the container.

EVIDENCE - The gas can be compressed, so the particles must have a space between them into which the may move and get closer. The gas takes the shape of the container, so the particles must be able to move to new locations wihtin the liquid to assume the new shape.

View the evidence