Advertisements
Advertisements
Question
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?
Solution
- Boiling
- Water in the kettle gets converted into vapour
- Endothermic
- Water vapour converted into liquid (condensation)
APPEARS IN
RELATED QUESTIONS
What do you observe when :
a piece of paper is burnt
What do you observe when :
solid ammonium chloride is heated
True or false?
During a physical change energy is either given out or absorbed by the system.
Melting of solid (wax) is a physical change.
What role does energy play in initiating a chemical change ?
Distinguish between the following.
Natural change and man-made change
Under which different types can the following changes be classified?
Conversion of milk into yogurt.
Give reason.
While purchasing canned food, its expiry date should be checked.
Picture based question
Observe the picture and list down the changes that are accompanied in the picture.
- ______.
- ______.
- ______.
______ is the process in which something becomes different from what it was earlier.