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Chemical and Physical changes

Chemical and Physical changes. Physical Change A change in the size or state of matter. Physical Change. melting/freezing (changing state) Breaking Cutting Squeezing Mixing dissolving. Chemical Change When the molecules of matter change Can usually NOT change back to original form.

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Chemical and Physical changes

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  1. Chemical and Physical changes

  2. Physical ChangeA change in the size or state of matter

  3. Physical Change • melting/freezing(changing state) • Breaking • Cutting • Squeezing • Mixing • dissolving

  4. Chemical ChangeWhen the molecules of matter changeCan usually NOT change back to original form

  5. Chemical Changes • spark/flame • Burning • bubble/fizz (from gas) • changes color • changes smell • hot/cold without heat • cooking

  6. Crumpling up paper

  7. Physical change

  8. Baking a cake

  9. Chemical change

  10. Melting cheese

  11. Physical change

  12. Burning cheese (or other food)

  13. Chemical change

  14. Cooking onions in a skillet

  15. Chemical change

  16. Chopping onions

  17. Physical change

  18. Making a party mix

  19. Physical change

  20. Tarnished silver

  21. Chemical change

  22. cracking open an egg

  23. Physical change

  24. cooking eggs

  25. Chemical change

  26. Chopping down a tree

  27. Physical change

  28. Melting wax

  29. Physical change

  30. Burning a candle

  31. Chemical change

  32. Melting butter

  33. Physical change

  34. Cutting your hair

  35. Physical change

  36. Bleaching your hair

  37. Chemical change

  38. Blowing up a balloon

  39. Physical change

  40. Popping a balloon

  41. Physical change

  42. Turning on a gas fireplace

  43. Chemical change

  44. Spraying hairspray (or paint or perfume)

  45. Physical change

  46. Lighting a firecracker

  47. Chemical change

  48. A rusty nail (or car)

  49. Chemical change

  50. Making lemonade

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