These statements describe the properties of solutions in terms of their acidity or basicity, which is measured using the pH scale. A solution with a pH of 7 is considered neutral, meaning it is neither acidic nor basic. Pure water is an example of a neutral solution. When a solution has a pH of less than 7, it indicates the presence of more hydrogen ions (H+) than hydroxide ions (OH-), which makes it acidic. Examples of acidic solutions include lemon juice and vinegar. Conversely, a solution with a pH greater than 7 has more hydroxide ions than hydrogen ions, categorizing it as basic or alkaline. Common examples of basic solutions include soap and baking soda. Essentially, the pH scale helps us understand how acidic or basic a solution is, which is important in various scientific and everyday contexts.
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