NCERT Exemplar Solution for Class 7 Science Chapter-5 Acids, Bases and Salts
Chemistry becomes more exciting when students start identifying substances around them based on their taste, touch, and reactions. Chapter-5 Acids, Bases and Salts introduces learners to common chemical substances found in daily life and explains how they behave differently. Students discover that some substances are sour, some are bitter, and others can change the colour of indicators. The chapter also explains neutralization reactions and their practical applications in medicine, agriculture, and everyday activities. The NCERT Exemplar Solution for Class 7 Science helps students understand these concepts through practical examples, activities, and logical explanations. By practicing questions from the NCERT Exemplar Solution for class 7, students improve their understanding of scientific reactions and develop analytical thinking skills. These NCERT solutions for class 7 are useful for strengthening fundamentals and preparing effectively for school examinations while making chemistry easier and more interesting to learn.
Find the Exercises PDF of NCERT Exemplar Solution for Class 7 Science Chapter-5 Acids, Bases and Salts
Understanding Acids and Bases
The chapter begins by explaining the basic properties of acids and bases. Acids are substances that usually taste sour, while bases are bitter and feel soapy to touch. Lemon juice, vinegar, and curd are common examples of acidic substances, whereas soap solution and baking soda are examples of bases.
Students learn about indicators, which help identify whether a substance is acidic or basic. Natural indicators such as turmeric, litmus, and china rose petals change colour when mixed with acids or bases. For example, blue litmus turns red in acidic solutions, while red litmus turns blue in basic solutions. The chapter also introduces synthetic indicators used in laboratories for testing chemical substances. Through activities and experiments, students understand how indicators work and why they are important in chemistry. The NCERT exemplar questions encourage learners to observe reactions carefully and apply concepts in practical situations.
Another important point discussed is that acids and bases should be handled carefully because some can be harmful. This teaches students laboratory safety and proper scientific practices while conducting experiments.
Neutralization Reaction and Its Applications
One of the most important concepts in this chapter is neutralization. When an acid reacts with a base, they neutralize each other and form salt and water. This process is called a neutralization reaction. It is usually accompanied by the release of heat.
The chapter explains how neutralization is useful in daily life. For example, when someone suffers from acidity in the stomach, antacids are used to neutralize excess acid. Similarly, if an ant bites a person, applying baking soda solution can help relieve irritation caused by formic acid. Students also learn how farmers use neutralization to improve soil quality. If the soil is too acidic, substances like lime are added to reduce acidity. On the other hand, if the soil is too basic, organic matter is used to balance it.
The NCERT Exemplar Solution explain these examples clearly and connect chemistry with real-life situations. Students can understand how scientific concepts are useful beyond the classroom. Activity-based questions also improve curiosity and practical understanding. The chapter further discusses industrial applications where acids and bases are used in manufacturing, cleaning products, and medicines. Such examples help students appreciate the importance of chemistry in modern life.
Salts and Their Importance
Salts are another important topic covered in this chapter. Salt is formed when an acid reacts with a base during neutralization. Students often think only table salt exists, but the chapter explains that there are many different kinds of salts with various uses. Common salt, baking soda, and washing soda are examples of useful salts found in homes and industries. These substances are used in cooking, cleaning, and manufacturing processes. Students learn that salts may have different properties depending on the acid and base used to prepare them.
The chapter also introduces the concept of soil treatment and environmental balance through the use of salts and neutralization techniques. Such information develops awareness about agriculture and environmental science. The exemplar questions based on salts help students improve their reasoning skills and scientific vocabulary. Fill-in-the-blanks, multiple-choice questions, and descriptive answers make learning interactive and engaging.
Importance of NCERT Exemplar Solutions
The NCERT Exemplar Solution for Class 7 Science Chapter-5 Acids, Bases and Salts provides detailed explanations and step-by-step answers that help students understand chemistry concepts more effectively. The solutions focus on conceptual learning rather than rote memorization. Students who regularly practice exemplar questions improve their confidence and problem-solving abilities. These solutions also prepare students for school exams by covering different types of questions, including application-based and logical reasoning questions.
The language used in the solutions is easy to understand and suitable for middle school learners. Scientific terms are explained clearly with practical examples from daily life. This makes learning chemistry enjoyable and less complicated. By studying this chapter carefully, students develop curiosity about chemical reactions and gain a better understanding of substances used in everyday activities. The chapter builds a strong foundation for advanced chemistry topics in higher classes.
FAQs for NCERT Exemplar Solution for Class 7 Science Chapter 5 Acids Bases and Salts
A neutralization reaction occurs when an acid reacts with a base to form salt and water. During this reaction, the acidic and basic properties cancel each other out. Neutralization reactions are useful in many daily life situations. For example, antacids help reduce stomach acidity, while lime is used to treat acidic soil in farming. This reaction is usually accompanied by the release of heat. In Class 7 Science Chapter-5, students learn about neutralization through simple experiments and practical examples. Understanding this concept helps students connect chemistry with real-life applications and recognize the importance of acids and bases in everyday life.
Indicators are substances used to identify whether a solution is acidic or basic. They change colour when added to acids or bases, making it easier to test unknown substances. Common indicators include litmus paper, turmeric, and china rose extract. For example, blue litmus turns red in acids, while red litmus turns blue in bases. Indicators are important because they help scientists and students study chemical properties safely and accurately. In this chapter, students perform simple activities using indicators to understand chemical reactions better. Learning about indicators also improves observation skills and practical knowledge related to chemistry experiments.