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need_help!

  • 2 years ago

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

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  1. Burningitdown
    • 2 years ago
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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.

  2. Burningitdown
    • 2 years ago
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    Hello?

  3. need_help!
    • 2 years ago
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    Well sand is obviously not..right?

  4. need_help!
    • 2 years ago
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    Sorry..

  5. Burningitdown
    • 2 years ago
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    It's fine, and no it isn't. Anything else?

  6. need_help!
    • 2 years ago
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    What do they mean by pure substance here?

  7. need_help!
    • 2 years ago
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    I mean like how can I know?

  8. Burningitdown
    • 2 years ago
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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.

  9. need_help!
    • 2 years ago
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    Oh wait! I read something about pure substance that it may be compound or element

  10. Burningitdown
    • 2 years ago
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    Mhmm.

  11. Burningitdown
    • 2 years ago
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    http://chemistry.about.com/od/moleculescompounds/f/What-Is-A-Pure-Substance.htm

  12. need_help!
    • 2 years ago
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    This is confusing >.<

  13. Burningitdown
    • 2 years ago
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    Well.. Let me think of how to put it.

  14. need_help!
    • 2 years ago
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    They're all pure except one?

  15. Burningitdown
    • 2 years ago
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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.

  16. Burningitdown
    • 2 years ago
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    No, No. All of them aren't pure, besides one.

  17. need_help!
    • 2 years ago
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    Gold isn't pure?

  18. need_help!
    • 2 years ago
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    water isn't pure?

  19. need_help!
    • 2 years ago
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    sand isn't pure?

  20. Burningitdown
    • 2 years ago
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    Well.

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

  22. Burningitdown
    • 2 years ago
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    Water isn't pure, it has other things in it such as sand and chlorine. Minerals, all in all.

  23. Burningitdown
    • 2 years ago
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    And, yes.

  24. Burningitdown
    • 2 years ago
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    But, what is gold?

  25. need_help!
    • 2 years ago
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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

  26. need_help!
    • 2 years ago
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    Gold is an element.. so it's pure?

  27. Burningitdown
    • 2 years ago
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    Yes. ^^"

  28. Burningitdown
    • 2 years ago
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    Gold is only gold.

  29. need_help!
    • 2 years ago
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    Yay! Thanksss LOOAADSSSSSSS :D

  30. Burningitdown
    • 2 years ago
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    Course. ^^"

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