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need_help! Group Title

Which of the following is a pure substance? Pure gold, pure milk, pure water, pure seawater, pure sand. And how do you know?

  • one year ago
  • one year ago

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  1. Burningitdown Group Title
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    Well, rule some out. Which ones do you know aren't? That is, if you do know any of them aren't.

    • one year ago
  2. Burningitdown Group Title
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    Hello?

    • one year ago
  3. need_help! Group Title
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    Well sand is obviously not..right?

    • one year ago
  4. need_help! Group Title
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    Sorry..

    • one year ago
  5. Burningitdown Group Title
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    It's fine, and no it isn't. Anything else?

    • one year ago
  6. need_help! Group Title
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    What do they mean by pure substance here?

    • one year ago
  7. need_help! Group Title
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    I mean like how can I know?

    • one year ago
  8. Burningitdown Group Title
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    What they mean by Pure substance, is something that can't be split into different things. An example is..|dw:1350413254215:dw| The tree, it has leafs, wood, and so on.

    • one year ago
  9. need_help! Group Title
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    Oh wait! I read something about pure substance that it may be compound or element

    • one year ago
  10. Burningitdown Group Title
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    Mhmm.

    • one year ago
  11. Burningitdown Group Title
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    http://chemistry.about.com/od/moleculescompounds/f/What-Is-A-Pure-Substance.htm

    • one year ago
  12. need_help! Group Title
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    This is confusing >.<

    • one year ago
  13. Burningitdown Group Title
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    Well.. Let me think of how to put it.

    • one year ago
  14. need_help! Group Title
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    They're all pure except one?

    • one year ago
  15. Burningitdown Group Title
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    Lets say, you have milk, alright? If you add cereal to it, it's no longer just milk. You're turning adding onto it. A pure substance is something that is only of one thing. Like..Say you have oxygen. Oxygen isn't a mixture of gasses, it's simply Oxygen. Nothing else but. That's a pure substance.

    • one year ago
  16. Burningitdown Group Title
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    No, No. All of them aren't pure, besides one.

    • one year ago
  17. need_help! Group Title
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    Gold isn't pure?

    • one year ago
  18. need_help! Group Title
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    water isn't pure?

    • one year ago
  19. need_help! Group Title
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    sand isn't pure?

    • one year ago
  20. Burningitdown Group Title
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    Well.

    • one year ago
  21. need_help! Group Title
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    Okay lets take your example you can add hydrogen to oxygen and it's no longer just oxygen.. right?

    • one year ago
  22. Burningitdown Group Title
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    Water isn't pure, it has other things in it such as sand and chlorine. Minerals, all in all.

    • one year ago
  23. Burningitdown Group Title
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    And, yes.

    • one year ago
  24. Burningitdown Group Title
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    But, what is gold?

    • one year ago
  25. need_help! Group Title
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    Ahhh! I get it! -I think- So pure means that it's only like one thing or element that can't be broken down more

    • one year ago
  26. need_help! Group Title
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    Gold is an element.. so it's pure?

    • one year ago
  27. Burningitdown Group Title
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    Yes. ^^"

    • one year ago
  28. Burningitdown Group Title
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    Gold is only gold.

    • one year ago
  29. need_help! Group Title
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    Yay! Thanksss LOOAADSSSSSSS :D

    • one year ago
  30. Burningitdown Group Title
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    Course. ^^"

    • one year ago
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