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Is it physical or chemical? page 133

Is it physical or chemical? page 133. Physical Change. Any change in size, amount, shape, or state/phase of matter. nothing new is created Ex.) melting a block of ice, cutting a piece of paper in half. Chemical Change. substances change into new substances with different properties

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Is it physical or chemical? page 133

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  1. Is it physical or chemical?page 133

  2. Physical Change • Any change in size, amount, shape, or state/phase of matter. • nothing new is created Ex.) melting a block of ice, cutting a piece of paper in half

  3. Chemical Change • substances change into new substances with differentproperties • The original substance no longer exists • Substances that undergo chemical change easily (like alkali metals) have a high reactivity Ex.) Digestion, spoiled food, explosives, and rust

  4. Physical or Chemical Change? Dissolving Salt/ http://www.youtube.com/watch?v=2WS5eFc8x1U

  5. Physical or Chemical Change? • Bleach and food dye http://www.youtube.com/watch?v=25tm3G3a0Wo

  6. Physical or Chemical Change? • dry ice CO2 goes from solid to gas – sublimation

  7. Physical or Chemical Change? • bending magnesium strip

  8. Physical or Chemical Change? magnesium in HCl

  9. Physical or Chemical Change? • vinegar and steel wool = Rust • vinegar and steel wool = Rust

  10. Physical or Chemical Change? • vinegar added to milk and the milk curdles

  11. Physical or Chemical Change? • bending magnesium strip

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