Acid-Base Definitions Select the observable properties of acids. produces color change in indicators bitter taste pHgt 7 sour taste electrolyte react with metals to produce H2 pHlt 7

Acids are substances that can donate a proton (H+) to another substance. They have certain observable properties that can be used to identify them. These properties include:<br /><br />1. Producing a color change in indicators: Acids change the color of acid-base indicators. For example, they turn blue litmus paper red.<br /><br />2. Bitter taste: Acids have a sour taste, not a bitter taste. The bitter taste is more characteristic of bases.<br /><br />3. pH less than 7: The pH scale ranges from 0 to 14, with 7 being neutral. Acids have a pH less than 7.<br /><br />4. Sour taste: Acids have a sour taste. This is one of the characteristic properties of acids.<br /><br />5. Reacting with metals to produce H2: Acids react with certain metals to produce hydrogen gas (H2).<br /><br />6. Electrolyte: Acids can dissociate in water to produce ions, making them electrolytes. However, this is not an observable property like the others listed.<br /><br />The incorrect options are "bitter taste" and "pH > 7". Bases, not acids, have a bitter taste and a pH greater than 7.