CHEM 1A Chapter Notes - Chapter 4: Chromate And Dichromate, Phenolphthalein, Reducing Agent
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Chapter 4: types of chemical reactions and solution. One of the most valuable functions of water involves its ability to dissolve many different substances. A partial charge is less than one unit of charge. Water is therefore a polar molecule because of this unequal charge distribution. The polarity is why water can dissolve many compounds. The positive ends of the water molecules are attracted to the negatively charged anions and that the negative ends are attracted to the positively charged anions. When ionic substances dissolve in water, they break up into individual cations and anions. Water also dissolves many nonionic substances, for example, ethanol. Fat molecules are nonpolar so therefore they do not dissolve in water. Like dissolves like is a useful rule for predicting solubility. 4. 2 the nature of aqueous solutions: strong and weak electrolytes. A substance, the solute, is dissolved in liquid water, the solvent.
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