Advertisements
Advertisements
प्रश्न
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.
Are these changes chemical in nature?
Advertisements
उत्तर
Yes, the changes are chemical changes because new substances iron sulphate (green) and copper (brown) are formed in the reaction.
APPEARS IN
संबंधित प्रश्न
Complete and balance the following chemical equations:
N2 + O2 →
What do you observe? When
Barium chloride is added to sodium sulphate solution
Give an example of the following chemical changes.
A reaction where colour change is noticed.
Name: Two nitrates that do not produce nitrogen dioxide on heating.
Give a word equation for the following reaction.
A salt which reacts with ammonium hydroxide to give a reddish brown precipitate.
Circle the odd one out. Give reason for your choice
Explain the following statement: Digestion is a chemical change.
The changes in which new substance with new chemical properties are formed are ______.
Burning of paper is the best example of ______ change.
Give an example where heat, light, and sound are produced during a chemical change.
