CK-12 Physical Science Concepts - For Middle School

(Marvins-Underground-K-12) #1

3.45. Solutions http://www.ck12.org


3.45 Solutions



  • Describe solutions.

  • Identify the parts of a solution.

  • Define soluble and insoluble.

  • Give examples of solutions in different states of matter.


It can be really exciting to explore a big underground cave like the one in this picture. Do you know how caves
form? Believe it or not, water is the answer. Water slowly dissolves rocks, especially certain types of rocks such as
limestone. When rocks or other substances dissolve in water, they form a solution.


What Is a Solution?


Asolutionis a mixture of two or more substances, but it’s not just any mixture. A solution is a homogeneous
mixture. In a homogeneous mixture, the dissolved particles are spread evenly through the mixture. The particles
of the solution are also too small to be seen or to settle out of the mixture. To put solutions in context as a type of
mixture, watch the video at this URL: http://www.youtube.com/watch?v=z2vM-G5I92U.


MEDIA


Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/82355
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