Chemistry
Chemistry, 05.05.2020 07:01, Michael321

In the PhET simulation window, click the Macro menu in the top left corner of the screen. This view gives a view of the beaker at a macroscopic level (as your naked eye would see it). The Micro menu shows what happens to sugars and salts at the molecular level when they dissolve in water (note that you can use the arrows to switch to other type of solutes). Use both the Macro and Micro menus in the PhET simulation to help complete the following statements regarding solutions.

Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer.

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ions

solute

negatively

opposite

Partical Charges

positively

NaCl

sugar

CaCl2

1. Pure water contains only water molecules that interact strongly with each other due to their , which are graphically depicted as δ+ and δ−.

2. Solutions are formed when a like a salt or sugar becomes homogeneously distributed in a solvent like water, and this distribution can be viewed in the Micro view.

3. When salts dissolve, they separate into individuathat strongly interact with the water molecules.

4. Binary salts are made up of two elements at varying ratios, where one element is a charged cation, and the other is a charged anion.

5. In the Micro view, each shake of the container releases 6 molecules of its respective solute, but 6 molecules of the saltactually produce more ions in solution than 6 molecules of the salt.

6. Not all soluble molecules are salts, e. g., a covalent species likereadily dissolves in water without forming ions.

7. The reason they dissolve is because their partially charged atoms are able to associate with the partially charged atoms of water molecules, and these attractive forces occur as long as they are between atoms withcharges.

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In the PhET simulation window, click the Macro menu in the top left corner of the screen. This view...

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