the name of necessary condition of chemical reaction.
Answers
Answer:
When one or more substances (element or compound) undergo a chemical change, with absorption or release of energy, so as to form one or more new products, then the change taking place collectively, is called chemical reaction
For chemical change following conditions are necessary :
1. There must be one or more substances to take part in chemical reaction.
2. There must be release or absorption of energy during a chemical reaction.
3. There must be one or more new substances formed during a chemical reaction.
Explanation:
Answer:
Close contact- For a chemical reaction to take place the reactants should be brought in close contact i.e., they should be mixed.
Sodium + Water → Sodium hydroxide + Water
Solution form- Some substances react with each other only when they are mixed in the solution form, e.g.,
(aq.)
Silvernitrate
+
(aq.)
Sodiumchloride
→
(ppt.)
Silvernitrate
+
(aq.)
Sodiumnitrate
Heat-Some reactants need to be heated to undergo a chemical change, e.g.,
Potassium chlorate
⟶
heat
Potassium chloride + Oxygen
Light - Some reactions take place in the presence of light.
Carbon dioxide + Water
chlorophyll
sunlight
Glucose + Oxygen