Advertisements
Advertisements
प्रश्न
What do you observe when :
a spoon of sugar is heated in a pan
Advertisements
उत्तर
When a spoon of sugar is heated in a pan, black (charred sugar) (carbon) is seen. Is a chemical change.
APPEARS IN
संबंधित प्रश्न
What do you observe when :
solid ammonium chloride is heated
State whether the following is physical or chemical changes.
burning of wood -
Melting of solid (wax) is a physical change.
Chemical changes are accompanied by changes in energy.
Distinguish between the following.
Natural change and man-made change
Under which different types can the following changes be classified?
Bursting of a cracker.
Under which different types can the following changes be classified?
Stretching of a spring.
Give reason.
While purchasing canned food, its expiry date should be checked.
How can a change occur in a substance?
Observe the picture containing a kettle and note that it has salt water in it and answer the following questions:
- What is name of the process that is done to the kettle?
- What will happen to the content of the kettle?
- What kind of change is occurring on the cold surface of the metal plate?
- What can you say about the quality of water that is obtained in the beaker?
