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How does water dissolve a salt?

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Water is a polar molecule. What this means is that the electrons that hold it together are not shared equally. Water is made up of one oxygen atom and two hydrogen atoms. They are joined by covalent bonds, which means that the atoms share electrons to fill their outer shells and become stable. In this case, the electrons are not shared equally...they spend more time around ...

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Graphing solubility -
A student decided to measure the amount of salt that would dissolve in 50 ml of water at different temperatures ...

A student decided to measure the amount of salt that would dissolve in 50 ml of water at different temperatures. The student found that the solubility at 10 degrees centigrade (10° C), was .56 grams of salt. At 40° C, 2.35 grams dissolved and the solubility at 70° C was 3.85 grams of salt.

Create a "Best fit" graph for the experiment above. Make sure you label the x and y-axis and include the units of measure. Copy the data table and graph to a new document. (10 pts.)

Re-size the data table and graph so that they are readable but take up a minimum of space. The entire assignment should be no more than 1 page. (2 pts.)
Below your graph in the document, respond to the following statement. (3 pts.)

Using the graph you have made, predict what the solubility of salt would be in 50 ml of water at 22° C. Do not graph 22 degrees, as it will change your graph. Use the graph you made to determine the mass at 22 degrees by just looking at it. This is call interpolation.

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