Advertisements
Advertisements
Question
Classify the following as chemical or physical change:
Burning of paper and wood
Options
Chemical change
Physical change
Advertisements
Solution
Chemical change
Explanation:
Burning paper is a chemical change since the combustion products, carbon dioxide, water vapours, smoke, and ash, cannot be turned back into paper or wood using any physical means.
APPEARS IN
RELATED QUESTIONS
A physical change is temporary. Explain.
Make a list of different types of changes with example.
Which of the following are physical changes and which are chemical changes ?
Freezing of water
Fill in the blank.
The reaction in which energy is evolved is called
Read the paragraph and note down the various types of changes it mentions.
It was nearing six o'clock in the evening. The sun was setting. A breeze was blowing. Leaves on the tree were shaking. Sahil was sitting in the courtyard, rolling balls of wet soil, and shaping them into various toys. Then he felt hungry and went into the house. Mother made a dough from wheat flour and fried purees. While eating hot purees, his attention was drawn outside the window. It had started raining. There was lightning, too. Sahil was enjoying his dinner in the dim light.
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Select the chemical changes from the following list of changes
The occurrence of lightning.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Wood to sawdust:______:: Wood to Ash: Chemical change
Distinguish physical and chemical changes.
