Advertisements
Advertisements
Question
What do you observe when :
solid ammonium chloride is heated
Advertisements
Solution
Solid ammonium chloride on heating changes into vapours (change of state) is physical change.
APPEARS IN
RELATED QUESTIONS
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
State whether the following is physical or chemical changes.
Melting of wax —
True or false?
In a chemical change, rearrangement of molecules and atoms involves some energy changes.
What role does energy play in initiating a chemical change ?
Distinguish between the following.
Periodic change and non-periodic change
How can a change occur in a substance?
Picture based question
Observe the picture and list down the changes that are accompanied in the picture.
- ______.
- ______.
- ______.
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?
Paper, LPG, CNG petrol, etc, are ______ substances.
______ is the process in which something becomes different from what it was earlier.
