Advertisements
Advertisements
Question
Fill in the blank.
The reaction in which energy is evolved is called
Advertisements
Solution
The reaction in which energy is evolved is called exothermic reaction.
APPEARS IN
RELATED QUESTIONS
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Name a chemical change which takes place in presence of:
Tick the most appropriate answer.
Physical changes are
Name two reversible changes.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Slow and fast change.
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
- Is easily reversible.
- Produces one or more new substances by a change in its composition.
- The change is temporary.
- The composition and properties of the original substance are not altered.
Select the chemical changes from the following list of changes
The carbon cycle.
Give the reason why the following is considered as chemical changes.
Sulphur when burnt in air evolves a gaseous acidic product.
Wood to sawdust:______:: Wood to Ash: Chemical change
