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Changing States

Learn about the different states of matter - solid, liquid, and gas - and what happens when energy is added or removed. Find out how temperature and heat affect matter's state and discover the processes of melting, freezing, evaporating, and condensing.

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Changing States

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  1. Changing States 3.5C

  2. Changing States Vocabulary gas conductor matter heat freezing liquid evaporating temperature insulator solid melting

  3. Matter Matter is anything that has mass and takes up space.

  4. Solids • Solids have a definite shape and volume. • Solids have mass. • Solids take up space.

  5. Liquids • Liquids have a definite volume but no definite shape. • Liquids take the shape of their container. • Liquids have mass. • Liquids take up space.

  6. Gasses • Gasses have no definite shape or volume. • Gasses spread out to fill the entire space given. • Gasses have mass. • Gasses take up space.

  7. States of Matter What does it take for matter to move from one state to another?

  8. Energy determines the state! + Energy GASES + Energy LIQUIDS SOLIDS

  9. When energy is added, particles move faster! When energy is removed, particles move slower! Add or Subtract Energy. . .

  10. TEMPERATURE • Measure of the movement of molecules (tiny particles) in matter • Measured using a thermometer or temperature probe • Scientists use the Celsius scale to measure temperature

  11. What will happen if heat is added? Why? HEAT

  12. Solid + Energy = ? • When energy is added to solids, they become liquids! • Examples?

  13. Liquid + Energy = ? • When energy is added to liquids, they become gasses! • What examples can you think of?

  14. Changing States • There are several names for matter changing states: • State change • Phase change • Physical change

  15. Ice changes to water—water changes to ice, frozen water is still water

  16. Water changes to steam, a gas, when it is heated to its boiling point, water vapor condenses to form a liquid

  17. Changes in State (phase changes) • Melting - solid to liquid • Freezing – liquid to solid

  18. Changes in State (phase changes) Evaporating – liquid to gas Condensing - gas to liquid

  19. So, did we get something new? • Ice cream and melted ice cream? • Chocolate and melted chocolate? • Ice, water, and water vapor? • Steel and molten steel?

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