Kapilesh Agrawala Solutions for Chapter: Physical and Chemical Changes, Exercise 7: EVALUATE YOUR UNDERSTANDING
Kapilesh Agrawala Chemistry Solutions for Exercise - Kapilesh Agrawala Solutions for Chapter: Physical and Chemical Changes, Exercise 7: EVALUATE YOUR UNDERSTANDING
Attempt the practice questions on Chapter 2: Physical and Chemical Changes, Exercise 7: EVALUATE YOUR UNDERSTANDING with hints and solutions to strengthen your understanding. Innovative Chemistry solutions are prepared by Experienced Embibe Experts.
Questions from Kapilesh Agrawala Solutions for Chapter: Physical and Chemical Changes, Exercise 7: EVALUATE YOUR UNDERSTANDING with Hints & Solutions
Write the various conditions favouring a chemical change.
Describe the following change on the basis of different criteria:
Frying a puri
Describe the following change on the basis of different criteria:
Light coming out of an electric bulb.
Describe the following change on the basis of different criteria:
Rolling out dough into chapatis.
Describe the following change on the basis of different criteria:
A tree falling in a storm.
Describe the following change on the basis of different criteria:
Sharpening a knife's blade.
Distinguish between controllable changes and uncontrollable changes.
Place some pieces of candle wax in a metal spoon. Hold the handle of the spoon with a cloth. Heat the spoon over a flame.
(a) Describe what happens to the wax in the spoon.
(b) Is the material in the spoon still wax?
(c) Is this is a physical change or chemical change or both? Why?
(d) Remove the spoon from the flame and allow it to cool. What happens to the wax?
(e) Is there a physical or chemical change taking place? Why?
