Advertisements
Advertisements
Question
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
Advertisements
Solution
physical change.
APPEARS IN
RELATED QUESTIONS
What do you observe when :
solid ammonium chloride is heated
What do you observe when :
a spoon of sugar is heated in a pan
State whether the following is physical or chemical changes.
Boiling of an egg —
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.
Under which different types can the following changes be classified?
Occurrence of an earthquake.
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.
Cut vegetables turn brown when exposed to air, this is due to ______.
