Thursday, October 13, 2011

Chemical Changes

What are the indicators of a chemical change?

56 comments:

  1. The indicators of a chemical change is unexpected color change, bubbling fizzing, light production, smoke, and production of heat.

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  2. If the substance provides heat, light, or becomes a completely new substance, that are some indicators of a chemical change and I forgot to add color change.

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  3. If the following things indicate in an experimentit means it is a chemical change, unexpected color change,Bubbling and/or Fizzing, Light production,Smoke,or production of heat.

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  4. Some indicators of chemical changes are color change, bubbling, fizzing, light production and smoke.

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  5. The indicators of chemical changes are signs such as unexpected color change,bubbling,fizzing,light prodution,smoke formation of a percipitate,and prodution of heat.

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  6. Some indictors are light productions, unexpected color change, production of heat, bubbling, fizzing, smoke, ect.

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  7. the indicators of a chemical change are color change,bubbling,fizzing,light productions,smoke ,ect

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  8. A chemical change is when there is unexpected coloring or fizzing and bubbling.

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  9. It makes smoke, its own light , and it has an unexpected color change and produces heat

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  10. the indicators would be color changing or fizzing and bubbling.

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  11. A chemical changes is when a substance or object completley changes form, in some sort of chemical way. Also when it has unexpected coloring, fizzing, or bubbling. That causes it to change.

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  12. An indication of a chemical change is unexpected color change,production of heat or light,starts to bubble,starts to fizz,or it starts to percipitate.

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  13. Some indicators of a chemical change would be when you see color, smoke, ect

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  14. Indicators of a chemical changes are color change, bubbling and fizzing, light, production, smoke, and production of heat.

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  15. Some indicators of a chemical change are unexpected color changes, bubbling and fizzing and light, heat and smoke productions. Some examples of a chemical change are:
    *fireworks
    *metal rusting
    *rotting eggs
    *burning logs
    *food digestion

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  16. Some indications include, unexpected color change, bubbling, fizzing, production of heat, an production of light.

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  17. the indicators of a chemical change is bubbling, fizzing, color change, heat, light, smoke, precipitation, change of state of matter

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  18. when you now is a chemical chages the physical porperties change.

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  19. Indicators of a chemical change are unexpected color change, light, fizzing/bubbling, smoke, and change in state of matter.

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  20. A chemical change is when you change something through chemical means.

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  21. To see the signs of a Chemical Change is that you might see smoke,its own light production,and cause bubbling fizzing.

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  22. Some indicators of a chemical change are unexpected color change, fizzing, bubbling, and production of heat, light, or smoke

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  23. This comment has been removed by the author.

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  24. It will become a new or diffrent matter such as unexpected color change,bubbling and fizzing,smoke,and production of heat,light.

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  25. i dont know what it is HELP ME PLEASE :-(

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  26. you know something is chemically changing when it has change in color,if it has bubbles shows heat and or light

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  27. if you mix two substances it becomes something else it chemically changes.

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  28. The indicator of a chemical change could be an unexpected color change, bubbling, fizzing, production of light, smoke, and production of heat. The matter becomes a new or different matter.

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  29. One sign is a precipitate-that is a solid forming ,also heat production, bubbling

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  30. A sign of a chemical change is when a substance provides heat, bubbles up or fizzes, provides light, gives off smoke, formation of precipitate (solids form from 2 liquids or 2 gases), or even has a unexpected change in color

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  31. Some of the classified indicators of chemical properties is when the matter changes or becomes something new with the atoms. To identify a chemical change look for signs of heat,light, smoke, fizzing or bubbling or color changes. Some examples of chemical changes are baking soda and vinegar put together make a chemical change cause it made something new.

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  32. chemical change is when matter undergoes into new or different matter subsance

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  33. This comment has been removed by the author.

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  34. Some indicators of a chemical change are une

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  35. A Chemical Change is when two or more chemicals join together and form something new or turn diffrent colors then before.

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  36. Another indicator of chemical change is having a soild forming from two liquads or gases

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  37. chemical changes are when matter undergoes when it becomes new or different matter so once the chemical change happens it turns into new matter like a log burning the fire burning the wood dose not stay the same it turns into ash

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  38. A indicator of an expirement is something unexpected in an expirement

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  39. The indicators of a chemical change are unexpected color,bubbling,smoke,fizzing,production of heat or light. A chemical change is also when the matter becomes new or different matter.An example of a chemical change are fireworks.

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  40. I think that to know if something is a chemical change it shows some changes. The changes are bubbles, may change in to something new and it may also change color.

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  41. Some indicators of a chemical change are unexpected color change, bubbling or fizzing, light production, smoke, formation of a precipitate, and production of heat.

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  42. Sorry I meant to post that in the physical change blog.

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  43. There are a lot of indicators but a few of them are heat, light, bubbling, sudden change of colors, Precipitate, and fizzing. And sudden production of Pandas. JK.

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  44. This comment has been removed by the author.

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  45. A chemical change is a change that completely changes its form when two or more chemicals are combined. The indicators for a chemical change are the bubbling, fizzing, the change of the heat, light, and smoke.

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  46. some chemical change indicators are when something becomes new or different matter, unexpected color, bubbling, fizzing, light production, smoke, formation of a precipitate, and production of heat. an example is fireworks, other examples could be a roting sandwhich or vinigar and baking soda mix.

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  47. Hey AUstin what did you mean by une?

    thx Nat. :-p

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  48. Sorry Mrs.B i didn't realize this was for a grade until you said it... I have a few more things I want to say. A chemical change is when matter becomes a new or different matter. A few examples are:

    1.Fireworks
    2.separating water back into Hydrogen and Oxygen
    3.Metal Rusting or Tarnishing,
    4.Logs burning.

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  49. A chemical change is when a substance becomes something new by having something added to it. Some indicators are: heat which would be something that fire holds and fire would create smoke which is another indicator of a chemical change. (creates ash) Fizz would be another indicator because that means that those substances didn't mix well since it reacted like that. Color change can also happen when two liquids are mixed together because the liquids had things in them that made them react by changing color.

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  50. A chemical change is when something changes completely different then it was before.One Indicater is color change

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  51. Also light production that would go with the fire. (heat and smoke)

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  52. The indicators of a chemical change is................ fizzing color change and smoke.

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  53. I would agree with the comments that I have read about chemical changes. One example is when some bread molds it is no longer bread. Therefore it is a chemical change.

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  54. A way you could experiment a chemical change is by adding baking soda to a beaker full of vinegar it would fizzy up and bubble but when it finished bubbling the substance is not the same any more.

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  55. Matthew - Don't forget to come see me during STREAM tomorrow so we can talk some more about chemical changes!

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