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Matter1. 2 Solids, liquids and gases Matter3 Solids, liquids and gases.

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Presentation on theme: "Matter1. 2 Solids, liquids and gases Matter3 Solids, liquids and gases."— Presentation transcript:

1 Matter1

2 2 Solids, liquids and gases

3 Matter3 Solids, liquids and gases

4 Matter4 In a state: Particles everywhere! Solid: particles close together, vibrating in fixed places Liquid: particles close together, but they can move past each other Gas: particles far apart, moving quickly

5 Matter5 Particle evidence Solids, liquids and gases expand when heated Dye diffuses through liquid water Smells diffuse through air

6 Matter6 Changes melting solid liquid freezing boiling liquid gas condensing

7 Matter7 Gases Air contains about 78% nitrogen and 21% oxygen You need oxygen to live Helium is a very light gas Carbon dioxide is a heavy gas You breathe out a bit more carbon dioxide than you breathe in

8 Matter8 Dissolving Some chemicals dissolve in water Some chemicals do not dissolve in water Particles of the solid diffuse through the water Heating speeds up dissolving Stirring speeds up dissolving

9 Matter9 Key words particle liquid solid gas diffuse melt dissolve freeze melt boil condense expand shape ice contract pour squash state boiling point melting point


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