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  • General

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  • 异同混合体

    A cup of black coffee in a pink saucer, symbolizing a homogeneous mixture.

    How do you like your coffee?
    ::你喜欢咖啡吗?

    Many people enjoy a cup of coffee at some point during the day. Some may drink it black, while others may put cream (or some dairy substitute) and sugar in their coffee. You can buy high-end coffee drinks at espresso stands (either sit-down or drive-through). Whatever your preference, you want the coffee to be the same at the beginning and the end of your drink. You don’t want the components to separate out, but you want your drink to be uniform from top to bottom.
    ::许多人在白天某个时候都享受咖啡,有些人喝黑咖啡,有些人喝黑咖啡,有些人在咖啡中加奶油(或一些奶制品替代品)和糖。 你可以在咖啡店购买高端咖啡饮料(要么坐下,要么开车通畅 ) 。 不管你喜好如何,你都希望咖啡在饮料开始和喝完时都一样。你不希望部件分离出来,但你想从上到下都穿制服。

    Mixtures
    ::混合物

    Ordinary table salt is called sodium chloride. It is considered a substance because it has a uniform and definite composition. All samples of sodium chloride are chemically identical. Water is also a . Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. You may dissolve a small amount of salt or a large amount into a given amount of water. A is a physical blend of two or more components, each of which retains its own identity and properties in the mixture . Only the form of the salt is changed when it is dissolved into water. It retains its composition and properties.
    ::普通食盐称为氯化钠,被认为是一种物质,因为它具有统一和明确的成分。所有氯化钠的样本都与化学性质相同。水也是一种.盐很容易溶于水中,但盐水不能被归类为一种物质,因为其成分可能不同。你可以将少量盐分解或大量分解到一定数量的水中。A是两种或多种成分的物理混合体,每个成分在混合物中都保留自己的特性和特性。只有盐在溶入水中时才能改变其形式。它保留其成分和特性。

      

     

     

     

    Homogeneous Mixtures
    ::异同混合体

    A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. The salt water described above is homogeneous because the dissolved salt is evenly distributed throughout the entire salt water sample. Often it is easy to confuse a homogeneous mixture with a pure substance because they are both uniform.  The difference is that the composition of the substance is always the same. The amount of salt in the salt water can vary from one sample to another. All solutions would be considered homogeneous because the dissolved material is present in the same amount throughout the solution.
    ::同质混合物是一种混合物,其成分在整个混合物中均匀,上述盐水是同质的,因为溶解盐在整个盐水样本中均匀分布,通常很容易将同质混合物与纯物质混为一谈,因为两者均匀,不同之处在于该物质的成分始终相同,盐水中的盐量各异,所有溶解物都被认为是同质的,因为溶解物在整个溶液中的数量相同。

    One characteristic of mixtures is that they can be separated into their components. Since each part of the mixture has not reacted with another part of the mixture, the identities of the different materials is unchanged.
    ::由于混合物的每一部分与混合物的另一部分没有反应,不同材料的特性保持不变。

     

     

     

    Take a deep breath...you just breathed in a mixture. This simulation will help you explore the mixture that surrounds all of us: 
    ::深呼吸... 你只是呼吸混合体。这个模拟会帮助你 探究我们周围的混合体:

     

     

     

    Summary
    ::摘要

    • A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.
      ::同质混合物是一种混合物,其成分在整个混合物中均匀。
    • All solutions would be considered homogeneous.
      ::所有解决办法都将被视为同质的解决办法。

    Review
    ::回顾

    1. What is a mixture?
      ::什么是混合体?
    2. What is a homogeneous mixture?
      ::什么是同质混合物?
    3. Are all solutions homogeneous mixtures?
      ::所有解决方案都是同质混合物吗?
    4. Can homogeneous mixtures be separated into their components?
      ::是否可将同质混合物分解成其成分?