Class 7

Shanaya

Asked: November 23, 2020In: Class 7 Science

Describe how crystals of copper sulphate are prepared.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 8

Shanaya

Asked: November 23, 2020In: Class 7 Science

Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 7

Shanaya

Asked: November 23, 2020In: Class 7 Science

When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 5

Shanaya

Asked: November 23, 2020In: Class 7 Science

How would you show that setting of curd is a chemical change?

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 6

Shanaya

Asked: November 23, 2020In: Class 7 Science

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 4

Category: Class 7

Describe how crystals of copper sulphate are prepared.

Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.

When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.

How would you show that setting of curd is a chemical change?

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.

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Category: Class 7

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