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The Particle Theory of Matter SNC1D

The Particle Theory of Matter SNC1D. What is matter?. Matter is defined as anything that occupies space and has mass. What is matter?. Matter is defined as anything that occupies space and has mass Examples: air, water, trees, your notebook. What is matter?.

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The Particle Theory of Matter SNC1D

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  1. The Particle Theory of MatterSNC1D

  2. What is matter? Matter is defined as anything that occupies space and has mass

  3. What is matter? Matter is defined as anything that occupies space and has mass Examples: air, water, trees, your notebook

  4. What is matter? Matter is defined as anything that occupies space and has mass Examples: air, water, trees, your notebook Non-examples: light, sound

  5. Particle Theory of Matter 1. All matter is made of tiny particles. The particles have spaces between them.

  6. Particle Theory of Matter 2. Different pure substances are made up of different types of particles.

  7. 3. Particles are always in constant random motion. Particle Theory of Matter

  8. 4. The particles in a substance attract each other. Particle Theory of Matter

  9. 4. The particles in a substance attract each other. Particle Theory of Matter The amount of attraction is different for different substances GASES: Weak LIQUIDS: Strong SOLIDS: Very Strong

  10. Particle Theory of Matter 5. The particles of a substance move faster when heated.

  11. Solids Eureka: Molecules in Solids

  12. Solids Solids • Particles of solids are closely packed in an orderly manner • Vibrate about their fixed positions

  13. Liquids Eureka: Molecules in Liquids

  14. Changing from a solid to a liquid ismelting. As heat energy is added, the particles vibrate faster, until the vibrations of the particles overcome the attractive forces between them.

  15. Liquids Liquids • Particles of a liquid are closely packedin a disorderly pattern • The particles move past one another

  16. Changing from a liquid to a solid is freezing As the temperature drops, the liquid particles lose energy and move even more slowly.Eventually, the particles settle into fixed positions.

  17. Gases Eureka: Evaporation and Condensation

  18. Changing from a liquid to a gas is evaporation. When heated, the particles move faster. Eventually, they have enough energy to overcome forcesattracting them.

  19. Changing from a liquid to a gas is evaporation. When heated, the particles move faster. Eventually, they have enough energy to overcome forcesattracting them. Liquids that evaporate quickly at room temperature are called volatile liquids

  20. Gases Gases • Particles of a gas are spread far apart from one another • The attraction between the particles is weak

  21. Changing from a gas to a liquid iscondensation As the temperature drops, the gas particles lose energy and move more slowly. Eventually, the movement of particles become slow enough for the gas to change into a liquid.

  22. Changing from a solid to a gas in a single step (because the forces between the particles in the liquid state are too weak) is sublimation. Dry ice (solid carbon dioxide) sublimes.

  23. More About Heat Effects Eureka: Expansion and Contraction

  24. Physical properties of the solid, liquid and gaseous states

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