7g_solids_liquids_and_gases.ppt 4z5ib

Contents

7G Solids, Liquids and Gases Introducing states of matter The particle model Properties of solids, liquids and gases Diffusion Summary activities 1 of 20 25

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Three states of matter At room temperature most substances exist in one of three physical states.

solid

1 of 20 2 25

liquid

gas

© Boardworks Ltd 2005 2004

Contents

7G Solids, Liquids and Gases Introducing states of matter The particle model Properties of solids, liquids and gases Diffusion Summary activities 1 of 20 3 25

© Boardworks Ltd 2005 2004

The particle model The difference between solids, liquids and gases can be explained by the…

All substances are made up of particles. The particles are attracted to each other. Some particles are attracted strongly to each other and others weakly. The particles move around. They are described as having kinetic energy. The kinetic energy of the particles increases with temperature. 1 of 20 4 25

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Particles in a solid – animation

1 of 20 5 25

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Particles in a liquid – animation

1 of 20 6 25

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Particles in a gas – animation

1 of 20 7 25

© Boardworks Ltd 2005 2004

Contents

7G Solids, Liquids and Gases Introducing states of matter The particle model Properties of solids, liquids and gases Diffusion Summary activities 1 of 20 8 25

© Boardworks Ltd 2005 2004

Properties of solids, liquids and gases

1 of 20 9 25

© Boardworks Ltd 2005 2004

Which state of matter am I?

1 ofof20 10 25

© Boardworks Ltd 2005 2004