English
CISCEICSE ICSE Class 7
Textbook Solutions7017
Concept Notes & Videos210
Syllabus

State Four Differences Between Physical and Chemical Changes. - Chemistry

Advertisements
Advertisements

Question

State four differences between physical and chemical changes.

Distinguish Between
Advertisements

Solution

Physical change Chemical change
  1. No new substances with new properties are formed.
  2. It can be reversed by simple physical methods.
  3. It is temporary change.
  4. Energy is neither needed nor produced.
  1. New substances with new properties are formed.
  2. Change cannot be reversed by simple physical methods.
  3. It is permanent change.
  4. Energy is either needed or evolved.
shaalaa.com
Classification of Change: Physical Changes
  Is there an error in this question or solution?
Q 7
Chapter 2: Physical and Chemical Changes - Exercise

APPEARS IN

Selina Concise Chemistry [English] Class 7 ICSE
Chapter 2 Physical and Chemical Changes
Exercise | Q 7

RELATED QUESTIONS

Explain the following giving an example.

Pure substance


Write true or false 

Earthquake is a desirable change.


Tick (√) the correct alternative from the choice given for the following statement

Which one of the following is volatile in nature ?


True or false 

Dissolving of a solid in liquid is a physical change. 


Write true or false

A natural change can also be a desirable change.


Classify the following changes as physical or chemical.


Classify the following as physical or chemical change :

Formation of curd from milk


Classify the following as a physical or a chemical change.

Burning of coal


Select the chemical changes from the following list of changes

Respiration in mammals.


State whether the following statement is true or false:

Anaerobic bacteria digest animal waste and produce biogas.


Share
Notifications

Englishहिंदीमराठी
Login
Create free account


      Forgot password?
Course
Use app×