Chapter 5-Acids, Bases and Salts / Class 7

Class 7 – Chapter 4- Acids, Bases, and Salts – Activity 4.3- China Rose as an Indicator

- by Jaishree Gorane - Leave a Comment

Activity 4.3 in ‘Acids, Bases, and Salts’ uses China rose petals as a natural indicator to teach students about acids and bases. This experiment helps students identify the pH level of various substances, with acidic solutions turning the indicator dark pink and basic solutions turning it green. It highlights the importance of natural indicators in understanding chemical reactions and pH sensitivity.

Class 7 – Chapter 4- Acids, Bases, and Salts – Activity 4.3- China Rose as an Indicator Read More
Chapter 5-Acids, Bases and Salts / Class 7

Class 7 – Chapter 4- Acids, Bases, and Salts – Activity 4.2- Turmeric as a Natural Indicator

- by Jaishree Gorane - Leave a Comment

Activity 4.2 in ‘Acids, Bases, and Salts’ teaches students about natural indicators using turmeric. This experiment shows how turmeric changes color in the presence of basic substances. Students learn to distinguish between acidic, basic, and neutral substances, highlighting turmeric’s role as a pH-sensitive indicator and its practical application in identifying chemical reactions in everyday substances.

Class 7 – Chapter 4- Acids, Bases, and Salts – Activity 4.2- Turmeric as a Natural Indicator Read More
Chapter 5-Acids, Bases and Salts / Class 7

Class 7 – Chapter 4- Acids, Bases, and Salts -Activity 4.1- Testing with Litmus Paper

- by Jaishree Gorane - Leave a Comment

Activity 4.1 in Class 7’s ‘Acids, Bases, and Salts’ demonstrates how to use litmus paper to identify acidic and basic substances. Students test various solutions, including lemon juice and soap, observing the litmus paper’s color change. This foundational experiment helps students learn about acids, bases, and neutral solutions, enhancing their understanding of chemical properties and observational skills.

Class 7 – Chapter 4- Acids, Bases, and Salts -Activity 4.1- Testing with Litmus Paper Read More
Chapter 5-Acids, Bases and Salts / Class 7

Class 7 – Chapter 4- Acids, Bases, and Salts- An Overview of Activities

- by Jaishree Gorane - Leave a Comment

Chapter 4 ‘Acids, Bases, and Salts’ in Class 7 Science introduces key chemical concepts through interactive activities. It covers litmus tests, natural indicators like turmeric and China rose, and the neutralization process. These experiments help students understand acids, bases, and their reactions, fostering hands-on learning and deeper comprehension of chemical properties.

Class 7 – Chapter 4- Acids, Bases, and Salts- An Overview of Activities Read More
Class 7 / Class 7 - Science - Heat / Uncategorized

Class 7- Chapter 3- Heat- 5 Worksheets with Answer Key

- by Jaishree Gorane - Leave a Comment

These worksheets, aligned with the “Heat” chapter, focus on the production, transfer, and measurement of heat. Key topics include the nature of heat, temperature measurement techniques, and heat transfer methods like conduction, convection, and radiation. Available in solved and unsolved formats, they are designed to enhance practical understanding of heat in various everyday contexts.

Class 7- Chapter 3- Heat- 5 Worksheets with Answer Key Read More