Exercise

Author:Dr. Yogita Gupta & Deepika Sharma

Dr. Yogita Gupta Science Solutions for Exercise

Simple step-by-step solutions to Exercise questions of Physical and Chemical Changes from Focus Science in Everyday Life. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from Exercise with Hints & Solutions

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>TRY OUT

How can you say that melting of ice is a physical change? 

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>TRY OUT

Burning of paper is a chemical change. How? 

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>TRY OUT

Give four examples of chemical changes from your surroundings.

MEDIUM
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>TRY OUT

What are endothermic reactions? Give two examples. 

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 4

Write P for physical change and C for chemical change for the following statement. 

Freezing of water. 

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 5

Write P for physical change and C for chemical change for the following statement. 

Respiration in living beings. 

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 3

Give the chemical formula of the following compound:

Vinegar

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 3

Give the chemical formula of the following compound:

Table salt