Question
2. What are the three properties of 'bases?
Answer
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Eirlys
Master · Tutor for 5 years
Answer
1. Chemical Composition: Bases can accept hydrogen ions or donate electron pairs.2. pH Level: Bases have a pH level greater than 7.3. Physical and Chemical Behavior: Bases feel slippery, taste bitter, and can neutralize acids.
Explanation
## Step 1: Understanding the Chemical Composition of BasesBases are compounds that have the ability to accept hydrogen ions (H⁺) or donate electron pairs. This means that they can either gain a hydrogen ion or provide an electron pair for a reaction. They are usually composed of a metal and a hydroxide ion (OH⁻), although there are exceptions.## Step 2: Understanding the pH Level of BasesThe pH level of a substance is a measure of its acidity or basicity. The pH scale ranges from 0 (very acidic) to 14 (very basic), with 7 being neutral. Bases have a pH level greater than 7. This is because bases increase the concentration of hydroxide ions (OH⁻) in water, which leads to a higher pH.## Step 3: Understanding the Physical and Chemical Behavior of BasesBases exhibit certain distinct characteristics. They feel slippery to the touch due to a reaction known as saponification, which occurs when the base reacts with the fats on human skin. Bases also have a bitter taste. Chemically, bases can neutralize acids, resulting in the formation of a salt and water. This is a key aspect of their behavior in various chemical reactions.Understanding these properties is crucial for identifying bases and predicting their behavior in different chemical contexts.