Lakhmir Singh and Manjit Kaur Solutions for Chapter: Physical and Chemical Changes, Exercise 2: Short Answer Type Questions
Lakhmir Singh Science Solutions for Exercise - Lakhmir Singh and Manjit Kaur Solutions for Chapter: Physical and Chemical Changes, Exercise 2: Short Answer Type Questions
Attempt the practice questions on Chapter 6: Physical and Chemical Changes, Exercise 2: Short Answer Type Questions with hints and solutions to strengthen your understanding. AWARENESS SCIENCE for Seventh Class solutions are prepared by Experienced Embibe Experts.
Questions from Lakhmir Singh and Manjit Kaur Solutions for Chapter: Physical and Chemical Changes, Exercise 2: Short Answer Type Questions with Hints & Solutions
State three differences between a physical change and a chemical change.
Write a word equation to represent the process of rusting of iron. Also write the chemical symbols and formulae of all the substances involved.
Explain why, explosion of a firework (such as cracker) is said to be a chemical change.
Explain why, melting of ice to form water is said to be a physical change.
What is meant by crystallisation? State its one use.
Describe how crystals of copper sulphate are prepared.
Give example of a chemical change which occurs by the action of heat.
Give example of a physical change which occurs by the action of heat.
