Physics: Molecules and Matter

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How do you calculate density?
density = mass/volume p=m/v (kg/m^3)=(kg)/(m^3)
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Diagrams of Solids, Liquids and Gases
table
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Solid
Solids have a fixed shape and cannot flow because the particles cannot move from place to place. Solids cannot be compressed or squashed because the particles are close together and have no space to move into
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Liquid
Liquids flow and take the shape of their container because the particles can move around each other.Liquids cannot be compressed or squashed because the particles are close together and have no space to move into
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Gas
Gases flow and completely fill their container because the particles can move quickly in all directions. Gases can be compressed or squashed because the particles are far apart and have space to move into.
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How do substances change state?
Diagram
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Internal Energy
The internl energy of a system is stored in atoms and molecules that make up a system. Internal energy is the total kinetic energy and potential energy of all the particles in a system.
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Card 2

Front

table

Back

Diagrams of Solids, Liquids and Gases

Card 3

Front

Solids have a fixed shape and cannot flow because the particles cannot move from place to place. Solids cannot be compressed or squashed because the particles are close together and have no space to move into

Back

Preview of the back of card 3

Card 4

Front

Liquids flow and take the shape of their container because the particles can move around each other.Liquids cannot be compressed or squashed because the particles are close together and have no space to move into

Back

Preview of the back of card 4

Card 5

Front

Gases flow and completely fill their container because the particles can move quickly in all directions. Gases can be compressed or squashed because the particles are far apart and have space to move into.

Back

Preview of the back of card 5
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