Final answer:
The pH values are presented in increasing order from acidic to basic. For example, lemon juice has a pH of around 2, which is highly acidic, while household ammonia has a pH of around 11, which is basic.
Step-by-step explanation:
The pH scale is the range of values from 0 to 14 that describes the acidity or basicity of a solution. The pH values are presented in increasing order from acidic to basic. pH less than 7 is acidic, pH equal to 7 is neutral, and pH greater than 7 is basic. For example, lemon juice has a pH of around 2, which is highly acidic, while household ammonia has a pH of around 11, which is basic.