What is "Like Dissolves Like"?
"Like dissolves like" is an expression used by chemists to remember how some solvents work. It refers to "polar" and "nonpolar" solvents and solutes.
For example, water is polar, and oil is non polar. Water will not dissolve oil, because water(H20) is polar. Salt (NaCl) is polar. Like dissolves like so polar dissolves polar, meaning water dissolves salt.
http://en.wikipedia.org/wiki/Solution
What does "dissolve" mean?
dissolve simply means to melt; liquefy. For example, to dissolve sugar into syrup.
here is a picture that resembles "dissolving"
Click here for a wonderful video about dissolving solutions!
here is a lab dealing with dissolving.
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