Advertisements
Advertisements
Question
What role does energy play in initiating a chemical change ?
Advertisements
Solution
In a chemical change molecules and atoms rearrange themselves to form new substances. This process involves some energy changes. In some changes energy is absorbed
e. g. burning of a substance and in some cases energy is evolved e.g. photosynthesis
APPEARS IN
RELATED QUESTIONS
What do you observe when :
a piece of paper is burnt
State whether the following is physical or chemical changes.
Melting of wax —
Distinguish between the following.
Periodic change and non-periodic change
Under which different types can the following changes be classified?
Conversion of milk into yoghurt.
Under which different types can the following changes be classified?
Bursting of a cracker.
Under which different types can the following changes be classified?
Occurrence of an earthquake.
How can a change occur in a substance?
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 ______.
