pH Scale Chart for CBSE Class 10 Science

The pH scale is an important concept in the CBSE Class 10 Science chapter Acids, Bases and Salts. It is used to identify whether a solution is acidic, neutral, or basic and to compare the strength of acidic and basic solutions.

The pH scale usually covers the range of 0 to 14. Any value below 7 is for an acid solution; a value of 7 indicates neutrality; any value greater than 7 stands for basic solutions. Knowledge of the pH scale will enable students to relate classroom theory to real-life situations.

Understanding the pH Scale

The pH scale can be divided into three main categories:

• pH below 7 – Acidic

• pH 7 – Neutral

• pH above 7 – Basic or Alkaline

As the pH value decreases below 7, the acidic nature increases. Similarly, a higher value above 7 indicates a stronger basic nature.

Examples that we can easily understand include: lemon juice and vinegar which are acidic, water which is neutral, and baking soda and soap solutions which are basic.

pH Values of Common Substances

The pH Scale Chart for Class 10 gives an easy visual representation to compare the different types of substances. Rather than rote learning different pH levels for different substances, students may see their position in the acid, neutral, or base section of the chart.

Lemon juice, vinegar, milk, pure water, sodium bicarbonate solution, and soap solution are some examples that can be used by the students to learn about pH scale variation.

Importance of pH in Everyday Life

But the role of pH is not only about understanding acids and bases. In this lesson, we learn about how pH is involved in our daily lives, in digestion, cavities, in soil conditions, and also in how the acids secreted by the bugs affect us.

It will be helpful since questions on this topic might be asked in the CBSE exam, not just about the theory but also about its uses.

For additional practice, students can refer to CBSE Sample Paper Class 10 and CBSE Previous Year Papers Class 10.