Give a one-word answer for the following.
An example of exothermic change.
Exothermic change- A change in which heat is released is called an exothermic change.
Example - Burning of candle, burning of fuel, etc. shows exothermic changes.
Give an example of each of the following chemical changes.
(a) A reaction involving.
(i) Change of state.
(ii) Formation of the precipitate.
(b) An exothermic and an endothermic reaction involving carbon as one of the reactants.
(c) A reaction where the colour change is noticed.
Give two examples of exothermic changes.
Define the following term and answer the associated question :
Exothermic reaction: State the effect of an exothermic reaction on the surroundings. Also give an example of such a reaction.