Subject Experts Solutions for Chapter: Physical and Chemical Changes, Exercise 2: Exercise 6.2
Subject Experts Science Solutions for Exercise - Subject Experts Solutions for Chapter: Physical and Chemical Changes, Exercise 2: Exercise 6.2
Attempt the practice questions on Chapter 6: Physical and Chemical Changes, Exercise 2: Exercise 6.2 with hints and solutions to strengthen your understanding. Exam Guru Science solutions are prepared by Experienced Embibe Experts.
Questions from Subject Experts Solutions for Chapter: Physical and Chemical Changes, Exercise 2: Exercise 6.2 with Hints & Solutions
Pure crystals can be obtained from their saturated solution.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
(b) Are these changes chemical in nature?
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
(c) Write a word equation for the chemical change if any.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
(a) Do you think rust is different from iron?
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
(b) Can you change rust back into iron by some simple methods?
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
(c) Do you think formation of rust from iron is a chemical change?
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
(d) Give two examples of a similar type of change.
Describe how crystals of copper sulphate are prepared.
